Intensive physical exercise four hours after learning is the key to remembering information learnt, say Dutch researchers.
Exercise is known to release proteins that can boost the part of the brain related to memory, and this study suggests the timing of it is crucial.
The study, in Current Biology, tested 72 people on their memory recall.
And it found exercising a few hours after learning was more effective than immediately afterwards.
It is thought the chemical compounds produced in the body by physical exercise, including dopamine and norepinephrine, can help to improve memory.
Guillen Fernandez, lead researcher, from the Donders Institute for Brain, Cognition and Behaviour, in the Netherlands, said: “Our results suggest that appropriately timed physical exercise can improve long-term memory and highlight the potential of exercise as an intervention in education and clinical settings.”