It seems that the brain works better even with just 15 minutes of exercise.

Mental Strengthening

It is often said that “the only way to train the brain is exercise”, but there are many research results that exercise actually improves brain function.
However, I don't know how much exercise I should do and for how long.

Therefore, I would like to introduce a paper that “Exercise enhances emotional and cognitive functions”.

According to this paper, it is said that the performance of short-term memory will be improved and the mood will be improved even if the exercise of the intensity of riding a bicycle is performed for 15 minutes. If only 15 minutes is enough, it's easy to get around.