David discusses; Topic 1: Weight training belts What is the effect of belts on performance? Are they of benefit to a bodybuilder? Do they alter muscle activation? What are the common mistakes people make with belts? Topic 2: Knee sleeves What is the current level of evidence? What may be the mechanism by which they benefit performance? Topic 3: Body weight fluctuations Why is weight loss, fat loss , and weight cutting very different? What causes bodyweight fluctuations? How can we manipulate these factors to benefit in a weight cut? What common refueling mistakes do people make following weigh-ins?