Similar words: sit up, wait up, split up, vituperative, vituperation, in situ, situate, situated. Meaning: n. an stomach exercise in which a person sits up from a supine position without using the arms for leverage sit up. v. 1. not go to bed 2. change to an upright sitting position.
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31. According to Dr. Richard Guyer, president of the Texas Back Institute, crunches and sit-ups put an unhealthy strain on your back due to the flex movement of the crunch or sit-up.
32. 5Swiss ball sit-up This is more challenging than a normal sit-up because the instability of the ball forces the core muscles to work harder.
More similar words: sit up, wait up, split up, vituperative, vituperation, in situ, situate, situated, situation, lassitude, vicissitude, no-win situation, get up, letup, getup, let up, put up, set up, stupa, setup, eat up, set-up, act up, cut up, hunt up, lift up, beat up, stupid, stupor, light up.