pretty thin woman in sports bra and leggings doing yoga upward facing plank pose, purvottanasana, working out indoors

asana ashtanga authentic bra bridge candid caucasian exercise facing female fit fitness flexibility flexible girl hatha health healthy indoors instructor leggings lifestyle out plank pose position posture practice pretty purvottanasana purvottasana skinny slim sport sportswear stretch thin training upward upwardfacing vinyasa woman work workout yoga yogi young