Muscle aches

Anon • 16||Christian✝||🇮🇹+🇦🇱||Jesus❤️||
Soo I recently started exercising a lot and I've been having a lot of pain in my thighs, belly, and lower back at the point were I had to take pain killers because it hurt so badly, and it's not really helping much.. Does anyone have any points on how to deal with the pain ... Or even prevent it???