two female caucasian athletes in good fit posing with fitballs

20s 30s activity adult aerobics athlete athletes athletic barbell body bodycare caucasian cheerful class conceptstwo exercise exercising female fit fitballs fitness flexibility girl good group gym gymhorizontal health healthy image life lifestyle loss many mats natural orientation people pilates posing real sport sportswear sporty stretch team teamwork thirties together training twenties two warmup weight wellness women workout young