young man in jeans and t-shirt holds hands to his stomach and back, hernia or sports back injury concept.abdomen, ache, acute pain, anatomy, appendicitis, back, backpain, belly, body, burning, chiropractic, chronic, constipation, cystitis, discomfort, disease, exercise, healthcare, hernia, holding, hurt, illness, inflammation, injured, injury, kidney, lower, male, medical, medicine, muscle, numbness, orthopedics, physiotherapy, posture, sore, stomach, stress, uncomfortable, young male