Caucasian man doing push-up using kettlebells in gymnasium

30 34 years athlete authentic authenticity balancing bare chest body builder body building caucasian challenge color image confident copy space determination effort endurance exercise fitness front view full length gymnasium health health club healthy lifestyle healthy living indoors kettlebell lehi lifestyle looking at camera man mid adult mid adult men millennial millennials muscle muscular build one person people photography physical fitness physically fit portrait posing push up real people serious sport strength strong surface level united states using utah vertical vitality weight lifting weight training weights wellbeing working out grit30 35 30 40 30's 30s 35 40 activity adult america american americas bare bare chest bare chested challenging chest color colour confidence dedication demanding energy exercising exertion fellow fitness center fortitude full body full length gentleman guy gym hardy healthy human human being indoor inside male mid west muscular negative space north america one operating persistence person portraiture positive power powerful push up resolution self assured self improvement seriousness shirtless solemn somber sports stamina thirties thirty topless us usa united states of america us usa ut weight lifter weightlifter well being western european white space work out workout