If you're familiar with sprint intervals, you know how potent they are for targeting muscular adaptations for better oxygen use and refueling alongside all the other physiological benefits.
But 30 sec on with 3-4mins rest is the default prescription.
Unfortunately, its not the best way to go about them. So I broke it all down in this video
I broke down some of the scientific rationale behind why Usyk does some of the exercises he does for his upcoming fight.
If you've seen his training, you might be interested to know why and if you should do it too.
Facebook is now paying creators quite well for content posted there. If you have a moderately sized Facebook page that's in the content monetization program and/or a blog with display ads (and/or affiliate), then I can run it hands off for you.
You can see some of my earnings and requirements here if you're interested: https://facebookpagemanagement.com/