And what you can do about it.
If you use weights or exercise machines where you are gripping weights or handles, you may needlessly be overusing the flexor muscles of the forearm (those muscles which close your fingers).
These tight muscles can pinch on one or more major nerves that enter the hand.
Watch the video:
To loosen up tight forearm muscles: Go to Self treatment techniques for the hand, wrist and forearm.
Another common problem you may have when using weighs, machines, or certain exercises (example: sit-ups, chin-ups, rowing) is tightening your neck muscles.
Keeping your neck relaxed may take concentration. But besides leading to neck pain, this can cause headaches, and (in some cases) pinching of major nerves that go into the hand, causing numbness or tingling in the hands and fingers.
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