For some time now, when I'm playing, even if it's stuff that doesn't actually make me tense, my right arm bicep starts to feel a bit of discomfort, any ideas why?

Pump them to gun size

HEHE SERIOUSLY, do you pick from your elbow?

To be honest, I don't know, I always try to pick from the wrist

If you're picking from the wrist, and your arm is relaxed while doing so, you shouldn't be flexing your bicep at all.

If you lift weights or picked something heavy up recently, your picking technique could be aggravating it.

use a lighter pick
just kidd'n
don't know what to tell you exept before I start playing I take ibuprofen to redoce swelling

also useful for smokers

Hahhahaha You are crazy guys! I smell a GMC comic here


On the topic - try experimenting with your position, try playing standing up. Probably you are just tensing up too much your whole arm when playing. Try to relax as much as possible. Also, maybe you overworked your biceps with some exercise (non guitar related)? It should go away in a day or two.

I agree. Have you done anything strenuous prior to noticing the pain? Also, are you warming up by stretching your fingers, hands, muscles, doing wrist rolls, etc. prior to playing? I'm no expert by any means, but these are the first ideas that come to mind.

Gary