A tiny daily exercise goal added up to more exercise among those who stayed
Who it’s about: Adults
- Helped
Three minutes a day plus two short weekly sessions gave more exercise than two long ones, among those who stayed.
Randomised trial of 142 UK adults who exercised very little · vs two 30-minute sessions a week · they rated themselves · ⚠ only counted people who finished
The study
Who took part
142 adults in the UK, about 53 on average. They were finishing an NHS weight-loss or diabetes programme and did less than 30 minutes of exercise a week. About 3 in 10 people who signed up dropped out and were not counted.
What they did
For 3 weeks, one group exercised for 3 minutes every day plus two 20-minute sessions a week. The other group did two 30-minute sessions a week, so both aimed for about an hour a week. Both groups saw the same videos and made a plan for when and where to exercise. They told the team what they did on WhatsApp three times a week.
What happened
Among people who kept reporting, the daily group did about 316 minutes of exercise over 3 weeks, against about 244. When everyone who started was counted, the difference was no longer clear. The daily group found their goal easier to stick to, and both groups liked exercising about the same.
Source
Tiny is Mighty? Investigating the Effect of Micro Goals on Physical Activity (2026)
DOI: 10.1080/08964289.2026.2726309 (opens in a new tab)
