old man practices ashtanga vinyasa yoga back bending asana paschimottanasana - seated forward bend

active activity adult asana ashtanga beauty bend body caucasian dorsal exercise fit fitness flexibility flexible forward gym gymnastics health life lifestyle man model muscle old out paschimotanasana paschimottanasana people person pilates pose position posture practice professional seated senior slim sport stretch training vinyasa workout yin yoga yogi