Many people hear 'Hot Flashes' and they may think that only women have them. Nope! Me too!
In fact, many men who undergo radiation treatment suffer from that dreaded side-effect of ugh, hot flashes!
This is what I've found that may help, doctors say we (yes me too) can try a cold plunge. That means an ice-bath or cold shower but that only makes me mad! Of course an ice cold drink may help along with fanning yourself. Also stepping into an infrared sauna or any other way for temperature changes to your body.
But here's another way that's less extreme, increase your oxytocin, they call that the love hormone. We do that by finding ways to laugh, getting out into nature, sleeping well (which can be hard if you keep waking up to kick the covers off of you), and doing exercises that you actually enjoy.
Hope that helps, both of us.