Make sure your ticker is ok before starting. It’s probably not a good idea to start doing it if you’re out of shape, it make take a couple of months to gradually work your way into being into good enough shape.
Just got a check up, and just stress tested.
This is perfect. No time, you can use your own body weight, and I have access to stairs in my apt building. 20 seconds running stairs should do it both in terms of muscle and wind for four minutes.
Had no idea this existed. Just downloaded a timer app to my phone.
If there is a watch that can do this, I’d seriously consider buying it.