How does marijuana affect recovery and athletic performance?

Marijuana is generally not considered ergogenic and typically hinders performance or has no effect, especially on cardiovascular tasks. While it might subjectively improve sleep, reduce anxiety, or offer minor pain relief, there's no mechanistic evidence it helps muscle or strength gains. Observational research suggests chronic use may be linked to visceral fat and insulin resistance, and teenage use to decreased IQ.

Does CBD have any negative side effects, particularly on male reproductive health?

Some literature indicates that chronic exposure to CBD is associated with a reduction in mammalian testes size, fertilization rates, and plasma concentrations of hypothalamic-pituitary-gonadal hormones, potentially impairing sexual behavior in mice. Human trials are still needed to confirm these findings.

What are common quality control issues with CBD products?

A 2019 study in JAMA found significant quality control issues: approximately 43% of CBD products were under-labeled, 26% were over-labeled, and only 31% were accurately labeled (within a 10% buffer). Additionally, measurable amounts of THC were detected in 18% of the samples, which is a concern for individuals subject to drug testing.

How important are warm-ups for resistance training, and what should they include?

Warm-ups are generally important for most people to increase core temperature and muscle temperature, optimizing enzyme function and muscle elasticity. An effective warm-up includes basic movement preparation and light reps of the exercise you're about to perform. Individualized dynamic stretches or foam rolling can be added if they subjectively improve movement feel, but extensive routines like 'voodoo flossing' are often unnecessary overkill.

Is incline chest work necessary for balanced chest development?

While flat bench press activates the pectorals broadly and effectively, incline pressing can offer preferential activation of the upper chest. Research on quad training suggests exercise variation leads to more uniform muscle growth. From a joint health perspective, varying pressing angles (flat, incline, dumbbell) can help prevent overloading joints at specific angles, making it a beneficial strategy for comprehensive chest development and longevity in training.

Is functional overreaching an effective strategy for hypertrophy?

Current research provides limited confidence in functional overreaching for hypertrophy. While one study in untrained subjects showed delayed fiber hypertrophy after an overreaching block, whole muscle volume didn't significantly increase, possibly due to edema. Skepticism remains because the training protocols are often extreme, applicability to trained lifters is unknown, and the observed performance 'overshoots' might just be recovery from a depressed state, not superior long-term gains compared to consistent, normal training.

Can you determine if you're a creatine non-responder based on weight gain?

While creatine loading often results in a 1-3 pound weight gain, primarily due to water retention in muscle cells, using weight gain alone to identify non-responders can be misleading due to daily weight fluctuations and increased fluid intake. The best indicator is often improved performance in your training log over a month or so. Creatine response is also a spectrum, not a binary 'responder/non-responder' state.

Why might some creatine monohydrate taste bitter?

Creatine monohydrate is typically tasteless and chalky. A bitter taste could potentially indicate a bad batch with quality control issues, such as contamination or a higher-than-normal concentration of creatinine (a creatine byproduct) instead of pure creatine. It is highly unlikely to be a taste perception quirk similar to cilantro.

What is the most effective way to measure fatigue in athletes?

Subjective self-reported measures of perceived energy, stress, fatigue, and mood are generally more pragmatic and valid for assessing athlete fatigue and predicting performance changes or injury risk than most objective measures. For aerobic athletes, heart rate variability (HRV) can be a decent objective indicator, and sleep quality/duration tracking can also provide objective insights into overtraining symptoms.

Is intermittent fasting more effective than calorie restriction for retaining muscle while losing fat?

Intermittent fasting (specifically time-restricted feeding, e.g., an 8-hour window) does not appear to be more effective than continuous calorie restriction for muscle retention. However, if protein intake is sufficient (around 1.6g/kg) and training is not performed in a fasted state, it is generally not notably worse. Many find time-restricted feeding beneficial for managing hunger and satiety during a deficit.

What are the key secrets to making exceptional homemade ice cream with a good texture?

The main secret is managing texture by minimizing large ice crystal formation. This involves using emulsifiers (like 8 egg yolks for a custard-style base) and stabilizers that absorb water. Key stabilizers are xanthan gum (1/4 tsp), skim milk powder (2 tbsp for protein), and cornstarch (1 tbsp). Proper heating to specific temperatures (180°F for milk/cream, 170°F after egg tempering) and straining are also crucial for a smooth, creamy result.

Key Moments

Q&A: Warming Up, Calculating Volume, Assessing Fatigue, and Creatine Non-Responders (Episode 13)

Stronger By Science

Education4 min read97 min video

Aug 15, 2019|11,407 views|316|20

Stronger By Science Podcast

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Key Moments

TL;DR

Podcast Q&A covers training volume, creatine, warm-ups, and making homemade ice cream.

Key Insights

Training volume for hypertrophy is best measured by the number of hard sets, not volume load.

Effective warm-ups involve general core temperature increase and specific movement preparation.

Both marijuana and CBD have potential indirect benefits and notable risks, with limited direct performance enhancement.

Incline chest work can offer preferential upper chest activation and contribute to balanced upper body development and joint health.

Functional overreaching's benefits for hypertrophy are questionable, especially for trained individuals, and may not outperform consistent training.

Identifying creatine non-responders is difficult; focus on performance improvements rather than just weight gain.

Subjective measures of fatigue (mood, energy) are often more effective than objective measures in monitoring athlete response.

Intermittent fasting is not inherently superior for muscle retention compared to traditional meal patterns if protein intake and training are sufficient.

QUANTIFYING TRAINING VOLUME FOR HYPERTROPHY

The traditional method of calculating training volume using volume load (sets x reps x weight) is debated. Research suggests that for hypertrophy, the number of hard sets performed, especially those taken close to failure, is a more reliable indicator than volume load. While volume load might correlate with metabolic cost, focusing on hard sets provides a better proxy for stimulating muscle growth across various rep ranges, with some considerations for very low or very high rep ranges.

EFFECTIVE WARM-UPS AND FATIGUE MONITORING

Warm-ups are important for increasing core and muscle temperature, which optimizes enzyme function for energy production and improves muscle viscoelastic properties for better contractile function. An effective warm-up involves general activity and specific movement preparation, often through lighter sets of the intended exercises. While subjective measures of fatigue (mood, energy levels) are generally more practical and valid for athletes than many objective measures, heart rate variability can be useful for endurance athletes, and sleep quality is a key indicator.

DIETARY SUPPLEMENTS AND SUBSTANCE USE CONSIDERATIONS

Concerns about marijuana's impact on recovery suggest no direct ergogenic benefits for muscle gain or strength, and potential for hindering performance or motivation. CBD research is emerging, with some studies indicating potential negative effects on male reproductive health and significant quality control issues in supplement products, including inaccurate labeling and THC contamination. Creatine non-response is complex; it's more of a spectrum, and weight gain is an unreliable indicator, with performance improvements being a better, albeit subjective, measure.

BALANCING TRAINING TECHNIQUES AND JOINT HEALTH

Varying exercise selection, such as incorporating incline chest work alongside flat bench press, can provide preferential activation of the upper chest and contribute to more uniform muscle development. This variation can also be crucial for long-term joint health by allowing tissues to adapt to slightly different stress angles, similar to how cross-training benefits endurance athletes. While a strong flat bench can build a significant chest on its own, variations offer additional benefits for balanced development and injury prevention.

FUNCTIONAL OVERREACHING AND ITS APPLICABILITY

The concept of functional overreaching, aiming for a subsequent supercompensation effect, has limited practical relevance for most individuals seeking hypertrophy. While some research suggests potential for delayed fiber hypertrophy post-overreaching in untrained individuals, the protocols are often extreme and the whole-muscle changes less pronounced. Furthermore, the perceived benefits might simply mask underlying performance decreases recovered during taper periods, rather than indicating true superiority over consistent, well-managed training.

INTERMITTENT FASTING AND MUSCLE MASS RETENTION

Current research indicates that intermittent fasting strategies, particularly time-restricted feeding with an 8-hour window, do not appear to be more effective for retaining muscle mass during fat loss compared to traditional meal patterns, provided total protein intake is sufficient (around 1.6g/kg) and training does not occur in a fasted state. While some studies show marginal impairments with very short feeding windows (4 hours), an 8-hour window seems to maintain equivalent lean mass and performance outcomes, and can offer benefits in satiety and adherence to calorie deficits.

MASTERING HOMEMADE ICE CREAM TEXTURE

Achieving superior texture in homemade ice cream hinges on minimizing large ice crystals by effectively emulsifying the base and incorporating ingredients that absorb water. Using egg yolks for emulsification, along with stabilizers like xanthan gum, skim milk powder, and cornstarch, is key. A proper base preparation involves heating the cream and milk mixture to 180°F, tempering egg yolks with sugar and stabilizers, and then gently reheating the combined mixture to 170°F before chilling. This process creates a rich, smooth, and stable ice cream that stores well.

Mentioned in This Episode

●Supplements

●Products

●Organizations

●Studies Cited

●Concepts

●People Referenced

Homemade Ice Cream Recipe Cheat Sheet

Practical takeaways from this episode

Do This

Use emulsifiers like egg yolks for a better texture

Add stabilizers like xanthan gum, skim milk powder, and cornstarch

Whisk xanthan gum thoroughly into milk/cream mixture as it heats to 180°F (82°C)

Whip egg yolks, sugar, skim milk powder, and cornstarch until thin and ribbony

Temper egg mixture by slowly whisking in hot milk/cream mixture

Heat combined mixture to 170°F (77°C) stirring constantly to integrate eggs without scrambling

Strain the base through a fine mesh sieve for a silky texture

Allow the base to chill overnight before churning

Experiment with different flavorings by steeping them in the hot milk/cream mixture

Avoid This

Expect homemade ice cream to have the same texture as industrially manufactured ice cream without stabilizers

Overcook the egg yolks when tempering, as this will lead to scrambled eggs

Underestimate the importance of chilling the base thoroughly before churning

Common Questions

For hypertrophy, the number of hard sets performed, close to or to failure, appears to be a better metric than traditional volume load (sets x reps x weight). This holds true for sets within a range of roughly 4 to 50 reps. However, very low rep training (triples and below) or loads below 30% of 1RM may require more sets or be less effective per set, respectively.

Topics

Training Volume Strength Training Intermittent Fasting Creatine Supplementation Nutrition & Diet Human Performance Fatigue Management Hypertrophy Training Warm-up Routines Fitness & Exercise CBD Research Marijuana And Exercise Homemade Ice Cream

Mentioned in this video

Studies & Research

Bjornsen et al. Study

A recent study that showed functional overreaching can lead to a subsequent overshoot in hypertrophy, particularly in untrained individuals at a fiber level.

Products

PacoJet

A high-end consumer device for making ice cream with a super smooth texture by beating already frozen mixtures with a powerful blade.

Cornstarch

A thickening agent used in homemade ice cream to absorb excess water, preventing the formation of large ice crystals and improving texture.

Skim Milk Powder

An ingredient added to homemade ice cream for its protein content, which acts as a stabilizer to improve texture.

Xanthan Gum

A common stabilizer used in homemade ice cream to improve texture and prevent large ice crystal formation, often used by vegans as an egg substitute.

Organizations

USAPL

The US national powerlifting federation, where Keith Maconi held squat, deadlift, and total records.

IPF

The International Powerlifting Federation, the global governing body for powerlifting.

Concepts

Creatine kinase

An enzyme whose levels surge during rhabdomyolysis, which was observed in some subjects in studies involving extremely high-volume, low-intensity training.

Vastus Lateralis

One of the quadriceps muscles that showed similar whole muscle cross-sectional area changes despite fiber hypertrophy increases in the Bjornsen study.

Rectus Femoris

One of the quadriceps muscles that showed similar whole muscle cross-sectional area changes despite fiber hypertrophy increases in the Bjornsen study.

Supplements

Creatine

A popular supplement discussed in the context of responders and non-responders, its effect on body weight, and taste perception.

People

Grant Tinsley

A researcher who has conducted studies on time-restricted feeding, showing its efficacy for lean mass retention in resistance-trained individuals when protein intake is sufficient and training is not in a fasted state.

Chuck the One-Eyed Dog

A listener who submitted a question about calculating volume for hypertrophy training.

Eric Helms

Another Eric who shares training principles, particularly about full-body sessions and distributing volume, that one of the hosts (Eric Trexler) has been applying.

Keith Maconi

A 66 kg weightlifter known for his unusual warm-up routine (or lack thereof) and for setting world records in powerlifting.

Media

Jeff Nippard's Channel

A YouTube channel where Eric Helms discussed his training principles in depth.