Is clenching your muscles exercise that will help you get in shape?
by 
Clueless Ned
ANSWERS: 3
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It's called isometrics which I feel is of limited value.
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Isometrics will not get you 'in shape' so to speak, but it can help improve your strength.
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It depends on your current health status. Isometrics are appropriate for people who are recovering from surgery and for many other conditions. If you are a normal, healthy adult, however you will get very little improvement from this type of exercise.
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