Caucasian man doing push-ups on running track

25 29 years authentic authenticity bare chest california candid caucasian color image copy space day exercise fit fitness full length health healthy healthy living high angle view horizontal lifestyle man millennial millennials number oakland one person outdoors people photography physical fitness push up real people running track shorts strength track track & field united states upper body working out young adult young men grit real life20 25 20 30 20's 20s 25 30 activity adult america american americas apparel bare bare chest bare chested ca chest clothes clothing color colour daylight daytime energy exercising exertion fellow footpath full body full length garment gentleman guy hardy high angle human human being male negative space north america numeral numeric one outdoor outside path pathway person power push up self improvement shirtless short pants sport topless track and field track event twenties twenty us usa united states of america us usa vitality well being west coast western european white space work out workout