athletic man doing jumping jacks, side view (profile), mid-movement pose, full body visible, holding dumbbells 8–10 kg in each hand, muscular body, defined abs, narrow waist, modern sportswear (fitted shirt or shirtless, athletic shorts), black Nike V2K Run sneakers, gym background, clean and bright lighting, realistic style, sharp focus, natural skin texture, fitness influencer style, no crop, proper anatomy, high detail
