Junge Trainerin schaut Fitness-Tracker an, während stehender Sportler auf Laufband läuft - Stockfoto & -bild

Back view of personal trainer instructing handsome sportsman working out on recumbent elliptical trainer

Selective focus of personal trainer standing near sportsman running on treadmill

Young sportswoman doing step aerobics exercise with dumbbells and male personal trainer with clipboard at gym

Back view of personal trainer standing near african american athlete lifting barbell

Attentive trainer assisting sportsman lifting barbell in gym

Selective focus of personal trainer standing near sportsman running on treadmill

Back view of personal trainer looking at attractive sportswoman lifting barbell

Personal trainer in fitness tracker standing near african american sportsman running on treadmill

Cropped image of male personal trainer writing in clipboard and young sportswoman doing step aerobics exercise with dumbbells at gym

Male personal trainer looking at sportswoman exercising with dumbbell at gym

Male personal trainer sitting with timer and young sportswoman doing exercise with abs roller at gym

Sportswoman doing exercises with dumbbell and male personal trainer standing near at gym

Male personal trainer helping sportswoman to do exercises with dumbbell at gym

Cropped view of personal trainer standing near sportswoman lifting weight in gym

Male personal trainer helping sportswoman to do exercises with dumbbell at gym

Side view of sportswoman doing exercise on rowing machine in sports center

Male personal trainer looking at sportswoman exercising with dumbbells at gym