There is simply no other exercise, and certainly no machine, that produces the level of central nervous system activity, improved balance and coordination, skeletal loading and bone density enhancement, muscular stimulation and growth, connective tissue stress and strength, psychological demand and toughness, and overall systemic conditioning than the correctly performed full squat.
You do not need to do many different exercises to get strong - you need to get strong on a very few important exercises, movements that train the whole body as a system, not as a collection of separate body parts. The problem with the programs advocated by all the national exercise organizations is that they fail to recognize this basic principle: the body best adapts as a whole organism to stress applied to the whole organism. The more stress that can be applied to as much of the body at one time as possible, the more effective and productive the adaptation will be.
Exercise is not a thing we do to fix a problem - it is a thing we must do anyway, a thing without which there will always be problems
If a program of physical activity isn't designed to get you stronger or faster or better conditioned by producing a specific stress to which a specific desirable adaptation can occur, you don't get to call it training. It's just exercise.
The full-range-of-m otion exercise known as the squat is the single most useful exercise in the weight room, and our most valuable tool for building strength, power, and size.
For young males that weigh between 150-200 lbs., deadlifts can move up 15-20 lbs. per workout, squats 10-15 lbs., with continued steady progress for 3-4 weeks before slowing down to half that rate. Bench presses, presses, and cleans can move up 5-10 lbs. per workout, with progress on these exercises slowing down to 2.5-5 lbs. per workout after only 2-3 weeks. Young women make progress on the squat and the deadlift at about the same rate, adjusted for bodyweight, but much slower on the press, the bench press, cleans, and assistance exercises.
There is simply no other exercise, and certainly no machine, that produces the level ofmuscular stimulation and growththan the correctly performed full squat.
Since the trainee is both inefficient and unadapted, only a few basic exercises should be used, and they should be repeated frequently to establish the basic motor pathways and basic strength.
Women who do look like men have taken some rather drastic steps in that direction that have little to do with their exercise program.