u/Negative-Donut2503

I just started playing tennis again after not having played for 8 years and rediscovered how much I loved playing. I’m mid30s and self rated 3.5-4. My main concern is developing arthritis or joint pain in the knees, hips, and back within the next 5 years (already feeling some aches here and there in this areas sometimes). Any tips or exercises you recommend that can slow the development of arthritis in an avid tennis player?

i have not move my lexus 2010 for 3 months, the car battery die, so I installed a new one, but when I try to drive it, driving it was stiff and the engine light was blinking and the traction control light went on then after i turn off my car and turn it back on, driving it was smooth and the engine light and traction control light were gone too, what is happening to my car?