close-up of a person running on a treadmill in a modern gym with blue neon lights reflecting off the floor

treadmill running exercise fitness health gym neon lights blue modern technology equipment cardio workout training indoors active lifestyle wellbeing stamina endurance motivation speed energy movement rhythm repetition routine healthclub fitnesscenter sportsfacility recreation leisure activity motion step stride footstrike impact cushioning support comfort performance athleticism agility coordination balance grace close-up person reflecting floor walking focus feet surface generative