4 minute bike workout
If you’re short for time try this 8 minute workout. Do a 4 minute warm up. Then do 4 minutes of activity, like running, uphill walking, cycling or rowing, at 90% of your maximal effort. You should be pushing hard and breathing heavily for the 4 minutes. In just 8 minutes, 4 of which you are working hard, you can get a great workout in that will help you on your weight-loss journey.