Most of the exercises that should make up your initial training are called compound, or basic, exercises. These are exercises that involve more than one muscle group, such as the squat, deadlift and bench press. This is in contrast to isolation exercises which only work one muscle at a time, such as dumbbell flyes (chest), concentration curls (biceps) and side laterals (side deltoid head).
The American College of Sports Medicine recommends that resistance training should be progressive in nature (for example, follow the principle of progressive overload - see below for an explanation), individualized, and provide a stimulus to all the major muscle groups (chest, back, shoulders, arms, abdominals, and legs). They recommend that beginners do one set of eight to 10 exercises for the major muscle groups, eight to 12 repetitions (reps) to fatigue, two to three days per week (multiple-set regimens may provide greater benefits if time allows). For older and more frail people (approximately 50-60 years of age and above), they suggest that 10-15 repetitions may be more appropriate.
In Week 1 you’ll perform three sets of every exercise per workout, which over the course of the week adds up to nine sets total for each bodypart, a good starting volume for your purposes. With the exception of crunches for abs, you’ll do 8–12 reps per set. This rep scheme is widely considered ideal for achieving gains in muscle size (the scientific term is hypertrophy) and is commonly employed by amateur and pro bodybuilders alike.
Training to a point of momentary muscle failure, at which completion of another repetition on any given set is impossible despite your greatest effort, is the only way to force the body to resort to its biochemical resources sufficiently to stimulate real growth! One of the biggest mistakes I see being made in the gym is when certain individuals will end a set of an exercise just because an arbitrary number of repetitions has been completed.This will do very little to stimulate muscle growth. A set should be terminated only when your muscles have been forced to the point of it being inconceivable to produce 1 more repetition within a working set. I use the word forced because obviously, you know muscle growth doesn’t come easy and literally needs to be forced! Any degree of effort in a set that is less than 100% may yield a bodybuilder some results, but never to the same extent that all out maximum effort will.
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