Day 4 means it's time for another circuit workout. This time, we'll do each exercise for 45 seconds, with a quick transition to the next exercise. Including rest times, it should take you just over 15 minutes. You'll need a bit of space for the bear crawls, but if you have to crawl in circles around your room, so be it. 😂
To help you keep track of the time, use an app like Seconds Interval Timer. It makes all of these workouts much easier to follow. Enjoy!