focused runner's legs on a treadmill in a bright, modern gym

runner treadmill gym workout exercise fitness muscular legs strength cardio training health indoors active lifestyle running shoes aigenerated athlete wellness determination focus leg muscles sports physical modern technology equipment endurance movement healthy living sportswear dynamic commitment male human body routine morning power session energy high performance rear view motion personal dedication indoor motivation focused 39aph39 bright this image highlights action emphasizing welllit setting photo was created using artificial intelligence capture