3 doctors weighed in:
How long should I do a metabolic circuit?
3 doctors weighed in

Dr. Thomas Namey
Internal Medicine - Rheumatology
2 doctors agree
In brief: At least 30m.
At least 30m and exercise 3-4x/wk.
Use a heart rate monitor so you don't fool yourself into thinking your are working out\harder than you really are. For a normal heart, you should keep a rate of at least 70% of your hr max. This is about 220-age in years. Combine with resistance traing.

In brief: At least 30m.
At least 30m and exercise 3-4x/wk.
Use a heart rate monitor so you don't fool yourself into thinking your are working out\harder than you really are. For a normal heart, you should keep a rate of at least 70% of your hr max. This is about 220-age in years. Combine with resistance traing.
Dr. Thomas Namey
Dr. Thomas Namey
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