I seem to have very tight tendons. It's very evident doing squats (although my hips are getting looser). When I do push-ups, I almost get a numb feeling in my left elbow when I am in the down position and my elbow is fully bent. Several months ago, after several days of single arm movements, I developed tendinitis in that elbow. It literally took months to get back to 100%. I did a workout today with a lot of push-ups, and now my elbow is sore and feels like the beginnings of tendinitis again.
I'm certainly going to rest it, but what should I do long term to fix the problem?
I'm guessing I need to increase the flexibility in my tendons for one. Does regular stretching or yoga help tendon flexibility, or do I just need to continue using it to loosen it up?
Also is there any particular food(s) that would help strengthen/heal from the inside? Maybe marrow? I would be willing to take a supplement as well but would prefer a food source.