Will the tape stay on if I'm a restless side sleeper?

This depends heavily on the tape brand and your skin type. In our testing, tapes with medical-grade silicone adhesives (like Sleep Karma's bamboo silk) stayed on through side sleeping and even face-in-pillow positions for most testers. Cheaper tapes with basic adhesives tended to peel at the corners. If you're a particularly restless sleeper, look for an X-shape or H-shape tape rather than a single strip — they provide more anchor points. Avoid applying tape to oily or freshly moisturized skin.