A member asked:

Weak, lightheaded, nauseas 45 min after. do protein bar. bs 102-109 so not that. totally exhausted after. cardio/ab/core/circuit train.

A doctor has provided 1 answer

Over-exercise?: Is your workout too intense? At age 40, the American Heart Association's average maximum heart rate is 180 beats per minute. If your workout heart rate is too high (at/above 85% of that) for your fitness level, if you don't allow enough rest between sets in your workout, or if you don't allow enough rest days between high-intensity workout days, then you could be suffering from over-exercise.

Answered 8/22/2014

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