young asian sporty man holding knee pain in running public nature park in the morning. joint or leg injury in athlete or jogger

ache ankle arthritis athlete body bone chiropractic cramp exercise fitness guy health healthcare healthy hurt inflammation injury jogger jogging joint knee kneecap leg ligament male man marathon massage medical muscle muscular osteoarthritis pain park patella people race rheumatic rheumatoid run runner self smart sore sport sportwear sprain tendon triathlon watch workout young