Dr. Anne Truong explains the refractory period, the time a man needs between orgasms. For younger men it's 15 minutes to several hours; older men may need a full day. Women don't have the same biological delay.
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How to make him hard again after he comes? He doesn't get hard for a second round. Men usually have a time where they cannot get another. So you have to wait some time, hours, sometimes the next day, depending on how young he is. If he's young, it could be 15 minutes to an hour. But men have a time period where they cannot have another. So it depends on how young they are, how healthy they are. In order for them to get another as well. OK, so that is expected. It's not unusual at all. All right. That is expected. And the older they are, the longer is the time. For women, that doesn't happen. Women can have multiple at one time or multiple at one time, but not for men.