I go regularly to the gym. I was doing some bodybuilding poses (as in flexing my muscle as hard as I can) in the last week and noticed that many veins show on my face(and body) . I just had a nosebleed after that. It s the third time it happened since I started flexing. I usually don t get nosebleeds and did not get one for good months before this. I also started taking citrulline malate and l carnitine (which supposedly improves blood flow to the brain) which improve blood flow. Did I damage dome capillaries in my nose by flexing and should I stop or go easier?