alternatives: - sit on exercise ball for some time every day, or - on the floor cross-legged, or in yoga poses called virasana (sitting between your shins) or

alternatives: - sit on exercise ball for some time every day, or - on the floor cross-legged, or in yoga poses called virasana (sitting between your shins) or double pigeon (with shins stacked in front of you). All very good for hips and back if done correctly, bad for knees if done incorrectly.