Keep a calculator handy. To calculate your waist-to-hip ratio accurately, measure the narrowest point of your waist and the broadest part of your hip. Divide the values you obtained from the measurement and you have your ratio. The waist-to-hip ratio is a more accurate parameter to measure BMI. Those with a waist-to-hip ratio of 0.8 are susceptible to cardiovascular disease and stroke.
2. Ab Plank is a great exercise to really challenge your entire core and build up your strength and endurance. The Plank works the lower abdomens, the oblique muscles and your lower back. It takes focus and concentration plus some upper body strength. Start with holding the plank position for 30- 40 seconds and build your way up. You will be amazed at how strong your cores will get by doing this exercise regularly.