10 squats every 45 minutes beat a 30-minute walk for blood sugar control

Ying Gao and colleagues randomised 16 overweight sedentary men into three conditions: uninterrupted sitting all day, a single 30-minute brisk walk, or 10 bodyweight squats every 45 minutes. The squat protocol reduced post-prandial (after-meal) blood glucose area under the curve by 14% more than the walk, and 28% more than continuous sitting. Peak glucose was lower and the glucose curve was flatter with hourly squats.

Your quadriceps, hamstrings, and glutes represent roughly 40% of your total muscle mass — the largest glucose storage depot in your body. Each squat contraction activates GLUT4 glucose transporters via an AMPK-dependent pathway that bypasses insulin signalling entirely. By activating these transporters repeatedly throughout the day, you maintain a near-continuous glucose drain from the bloodstream into muscle cells. A single 30-minute walk activates this pathway once and then lets it go quiet; repeated squat bouts keep it running.

The study used only 16 overweight men over a single day — long-term effects and effects in women, people with diabetes, or those with different body compositions are unknown. The squat protocol required no sitting at all between sets, which may not be realistic in all work environments.