Jonge sterke vrouw in oranje sportkleding doen plank oefening op mat, terwijl zwarte coach met behulp van smartphone timer tijdens fitness training in de sportschool - Stockfoto’s en -afbeeldingen

Focused African American male instructor holding smartphone with timer while sportswoman doing mountain climber exercise in gym

Beautiful girl training in the gym. Russian classic dancer doing stretching and yoga poses

Middle-aged Caucasian woman on training in fitness studio use smartphone gadget text message online. Diverse female group do sport use cellphone devices during workout in gym. Technology concept.

Side view of positive determined young multiracial athletic man and woman in sportswear doing plank high fives exercise during workout in modern spacious gym

Overhead view of athletic woman listening music in earphones while doing abs exercises on mat

Sporty multiethnic girls doing plank exercise on yoga mats in gym

Sportive woman lying on mat in gym and doing candlestick core exercise working out on abdomen muscles

Side view of beautiful adult female in sportswear doing plank exercise on floor in modern gym

Side view of adult fit sportswoman on mat doing plank exercise training abdomen

Side view of attractive adult lady in sportswear doing plank exercise on Swiss ball near mirror in modern gym

Adult supportive woman in gym working out on mat and doing leg lifts

Side view of fit young lady in sportswear performing squats during workout under green illumination

Side view of cheerful fit woman doing exercise on step platform against mirror in modern gym