The Squat. Maybe the greatest and most important exercise there is. Definitely key to mass and power.Source: Muscle and Fitness (Issue May 1982) Page #92 - Muscle and Fitness (Issue May 1982) Page #93 - Muscle and Fitness (Issue May 1982) Page #94 - Muscle and Fitness (Issue May 1982) Page #95 - Muscle and Fitness (Issue May 1982) Page #161 - Muscle and Fitness (Issue May 1982) Page #169 - Muscle and Fitness (Issue May 1982) Page #170 - Muscle and Fitness (Issue May 1982) Page #175 - Muscle and Fitness (Issue May 1982)