portrait of young beautiful fit woman in black sportswear training arms with trx fitness straps in the gym doing push ups train

active activity aerobics arms athletic attractive background bands beautiful black body brunette care caucasian chest cross doing elastic endurance equipment exercising female fit fitness functional girl gum gym gymnastics health indoor legs motivation muscle pecs people performing physique pilates portrait pose position power push resistance row shoulders sport sportswear sportwear sporty straps stretching strong suspension train trainer training triceps trx upper ups window woman workout young