Three heavy sets per muscle group suffice, according to researchers

A new approach in strength training looks at the optimal number of sets per workout. According to researchers, three heavy sets per muscle group are sufficient to achieve 80% of the results.

The so-called 'Rule of 3' was discovered by sports scientists who compared the effects of different training methods. The idea is that additional sets only marginally yield more results.

The findings are published in a report that takes stock of the current knowledge about strength training. It suggests that efficient workouts are possible with less time investment.

Experts advise performing the sets well and resting sufficiently between the series. The 'Rule of 3' would mainly apply to advanced athletes who have already built a certain foundation.

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