Squats vs. walking debate

Bryan Johnson’s new claim sounds like a shortcut: 10 squats every 45 minutes after a meal can beat one 30-minute walk for blood-sugar control, and he put a specific number on it, saying the squat routine was better by 14%. The claim spread on April 11, 2026 through coverage of his Instagram post and comments from doctors asked to react to it. (indianexpress.com) The basic idea is simple: after you eat carbohydrates, your body turns part of that food into glucose, and blood sugar usually rises for about 30 to 90 minutes. A short bout of movement during that window gives working muscles a chance to pull some of that glucose out of the bloodstream. (health.clevelandclinic.org) That is why doctors have spent years telling people to move after meals, not just at some random time later in the day. A 2023 systematic review in the journal Sports Medicine found that exercise done close to food intake is the most effective way to blunt post-meal glucose spikes. (link.springer.com) Johnson’s twist is not “move after eating.” His twist is “break up sitting again and again,” because 10 squats every 45 minutes turns one exercise session into repeated muscle contractions across the whole post-meal period. (indianexpress.com) That part does line up with real research. The American Diabetes Association says its Standards of Care recommend breaking up sitting with brief activity every 30 minutes, and it cites evidence that three minutes of movement every half hour improved blood glucose in adults with type 2 diabetes. (diabetes.org) A 2025 meta-analysis in Frontiers in Nutrition looked at 17 trials with 261 participants with obesity and found that brief activity breaks lowered post-meal glucose and insulin compared with uninterrupted sitting. The same paper said the signal looked larger when the breaks came every 30 minutes or less and lasted two to five minutes, using either walking or simple resistance moves. (frontiersin.org) But that is not the same as proving that “10 squats beats a 30-minute walk” for everyone, after every meal, by exactly 14%. The evidence base is a mix of small trials, different meal types, different exercise timing, and different groups of people, so a clean one-size-fits-all winner is harder to defend than a viral post makes it sound. (frontiersin.org) (link.springer.com) Walking also has a stronger case than the post suggests. A 2025 Scientific Reports trial in 12 healthy young adults found that a 10-minute walk immediately after glucose intake lowered peak glucose significantly, while a 30-minute walk starting 30 minutes later did not beat rest on peak glucose in that study, which means timing can matter as much as duration. (nature.com) Doctors quoted in the Indian Express piece made the same distinction in plain language: squats may be useful for glucose control because they activate large lower-body muscles and interrupt sedentary time, but walking still matters for cardiovascular health and chronic-disease risk. Their bottom line was not “pick one forever.” It was “combine both.” (indianexpress.com) So the practical read is narrower than the headline fight. If you sit for long stretches after meals, adding frequent movement breaks like squats can help blunt the glucose rise, and if you can take a walk soon after eating, that helps too. (diabetes.org) (health.clevelandclinic.org) The part worth keeping is not that squats have “defeated” walking. The part worth keeping is that one 30-minute workout does not erase six hours of sitting, and the body seems to reward people who stand up and use their muscles throughout the day. (frontiersin.org) (diabetes.org)