Slow motion close-up of a child's hand holding onto a gymnastics ring and then letting go

gymnastic rings monkey bars exercise playground structure boy gymnastics playground gymnastic bars exercises workout work out strong strength vigorous physical activity physical training playset play area parks playstructure fit active aerobics physical education phys ed child training sports happy childhood healthy lifestyle growing discipline activity wellness healthful games childhood beneficial young children wholesome coaching education girl instruction lessons recreation ground thriving schoolgirl