When doing bicep curls, the first rep is relatively easy but eventually it becomes impossible to do a single curl.
After a rest, the muscle resets and can once again lift.
What is causing the muscle exhaustion and what is it that “resets” within the muscle?
In: 85
Until someone more knowledgable can answer: It’s probably because ATP (short-term energy source) gets depleted and lactic acid builds up (when it’s anaerobic exercise).
IIRC for some reason there is also a neurological component where your nervous system get “exhausted” for reasons which are not fully understood.
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