According to the Current Biology Journal that was published last week, we can improve our memory by working out after we learn. You should not work out right away because the strategy would not be as effective. My advice would be to wait four hours. Volunteers who participated in the experimental study spent four hours on a high-intensity stationary bike after being taught new information. These volunteers were observed to have 10% growth in retention of the information compared to the other participants who worked out directly after or not at all.
It is clear that there are beneficial effects if you perform exercise in a timely manner to retain information and strengthen long-term memory. Besides this, the most efficient strategy of recall would be personal interest.