2. Running – Need I say more? We all know how to run but most of us don’t appreciate how incredibly effective it can be. Before you rush to spend hundreds or even thousands of dollars on cardio machines, just go outside and run. If you run fast and include some uphill running, you can get a great workout in just 20 minutes or so.
3. Kickboxing classes – These have become very popular over the past few years and for good reason. Kickboxing, if done intensely, works your entire body from head to toe and burns a lot of
calories. Because it requires coordination and different movement than most cardio workout do, even fit people find these workouts challenging……..