happy smiling woman doing sport exercises

active adult aerobics athlete attractive background beautiful black body brunette caucasian clothes color dancer dancing development doing energetic energy exercise exercises exercising female fit fitness full girl girls gym health healthy horizontal improvement indoors isolated jog jogger jogging keep legs length lifestyle limberingup lying model motion move movement people persistent person physical raise run runner running shape shoes shorts slender slim sneakers sport sports sporty sprint straight strong studio summer top tough training warmup wellbeing white woman workout young