It's incredible how fast you can progress with just these simple exercises. I suspect a lot of people would be quite surprised at how good they can get at push-

It's incredible how fast you can progress with just these simple exercises. I suspect a lot of people would be quite surprised at how good they can get at push-ups and crunches if they commit to them for 3-4 weeks. Even starting at 5 each when waking up and before going to bed every other day, your body will get used to the effort very quickly. Make sure to properly warm up!