Powerlifting
The sport the speaker started getting into, influencing his weight gain goals.
Videos Mentioning Powerlifting

Protein quality: What is it, what affects it, and how much does it matter?
Stronger By Science
The sport the speaker started getting into, influencing his weight gain goals.

250 ‒ Training principles for longevity | Andy Galpin, Ph.D. (PART II)
Peter Attia MD
A strength sport consisting of three lifts: deadlift, bench press, and squat, scored solely on the total maximal weight lifted, with no speed component.

235‒Training principles for mass & strength, changing views on nutrition, & creatine supplementation
Peter Attia MD
A strength sport comprising three main lifts: squat, bench press, and deadlift. Competitors get three attempts at each, with the highest total weight lifted winning.

Kelly Starrett Interview (Full Episode) | The Tim Ferriss Show (Podcast)
Tim Ferriss
A strength sport consisting of three attempts at maximal weight for three lifts: the squat, the bench press, and the deadlift.

239 ‒ The science of strength, muscle, and training for longevity | Andy Galpin, Ph.D. (PART I)
Peter Attia MD
A strength sport focused on lifting the maximum weight once in three exercises: deadlift, bench press, and squat, primarily an expression of pure strength with minimal speed component.