a middle-aged man does abdominal crunches while lying on the floor. working out his core at his home gym

crunches abs abdominals abdomen six pack core torso ab lying floor situps hands head typical home gym equipment house indoor workout station exercise training fitness wellness 4044 years exercising fit muscular toned model active lifestyle athletic healthy physique buff low bodyfat male asian man southeast filipino guy indonesian malaysian vietnamese chinese black mat artificial grass camera looking gray sweater green shorts focused serious conditioning