When I was in middle school, I used to ride all the time. Very difficult trails, hours on end. Not once did I have any pump problem.
Fast forward 10 years and I decide I want to bike again. First day out I bump into a friends dad I used to ride with. Having a big ego and all I didn't want to slow down or rest, but I noticed my forearm swelling and losing grip. I ended up whiskey throttling right into a tree....very bad. I sold the bike a month later after one ride because it wrecked my knees.
It's been 2 years and I decide to try again, but not follow experienced riders. First day I go to a track, and same problem. After a lap my forearms are pumped and I'm sooo close to flying off this bike. I took my time though and took long breaks at the truck.
So my question, is it possible to get back to where I used to be? Will this arm pump get better?
Side note: I do body build and am pretty built. 210 lbs 5'10". I don't know if that's making the pump worse.