Can a short night of sleep derail your training session? New research suggests the answer is not necessarily. While seven to nine hours remains the widely recommended sleep range for overall health, a 2024 study indicates that some people can still make meaningful strength gains even when sleeping around five hours a night.
What the study found
The research followed 36 men who did not normally train with weights and had no diagnosed sleep disorders. They were divided into groups averaging about seven hours of sleep, about five hours of sleep, and more than seven hours of sleep. The two training groups used resistance bands, while the control group did not exercise.
Results showed that both training groups improved more than the non-exercising group. In some muscle areas, the seven-hour sleepers performed slightly better, but in others the outcomes were nearly the same. The authors concluded that the idea of seven hours as a strict minimum for strength progress may be more flexible than once thought.
Consistency still matters most
Experts note that sleep remains important for recovery, energy, and long-term performance. Still, the bigger lesson is that progress often comes from showing up regularly, not from waiting for the perfect conditions. Missing one ideal night of sleep does not automatically cancel the value of a workout.
Wearables such as smart rings and fitness watches can help track sleep patterns and training consistency, but they should be used as guidance rather than a reason to skip exercise. For many people, the most effective approach is steady movement, smart recovery, and realistic habits that can be maintained over time.
As sleep science evolves, fitness routines may become even more personalized, helping people train with greater confidence and flexibility.