Normal trials pains, your body will get used to it eventually although my wrist problems ended when I changed bars to some try-all elite risers, just don't tilt them too far foward. Another thing I figured it helped me a lot was tilting the brake levers down, so that when you are standing on your bike, your hand is in line with your forearm instead of bent upwards (when grabbing the brakes); it really released a ton of pressure and stress on my wrists. Now I can ride without any wrist pain what so ever.