Forearm Pump

Arm pump or Forearm pump, all you riders have had it or heard about it. It SUCKS!!! Let me tell you. As we all know it happens to everyone regardless of age, sex, or race. I used to get severe cases of it when i was younger. Always trying to "rub it out" that never worked though.

Some tricks: strengthen the muscles in your arms, ride more, make sure you are wearing the correct gear (THAT FITS!), and stretch.

Strengthen: One could squeeze a stress ball. This tightens and looses the muscles in the forearm and starts to build up strength the longer one does this exercise. One can also hold light weights (3-5pds) in front of him/her and extend their wrists multiple times. This exercise strengthens the muscles in the wrist in the forearm and the wrist and it is a simulation of twisting the throttle.
Ride more: Isn't that the cure to all of our problems anyways!? I know it is for mine.
Correct gear: Make sure your gear fits properly. One does not want to get gloves or pants that are to tight. With out constant blood flow it can cut off circulation. With proper blood circulation it should reduce the amount of arm pump.
Stretch: One can flex and extend wrist multiple times before riding. This will loosen up the muscles.

-Hope this helps!

To learn more/ Additional Information: http://www.stanislausorthopedics.com/armpumpandmotocross.htm