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3

This sounds like muscle fatigue and is absolutely normal and expected. This happens to every single person who works out. Your muscles aren't going to be able to curl forever during a workout session. You're breaking down muscle fibers with each repetition. This means the muscle will be temporarily weaker. Resting and eating repairs muscle fibers, and make ...


1

Could be that by 'stiff' you mean getting a pump. If you have a bicep pump it will be hard to contract your muscle normally because it is 'pumped up'. Assuming that it is the pump, most people actually strive to get their muscles pumped up, mostly for ego reasons mind you, because it feels good and they look bigger. It doesn't actually help you get any ...



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