The dead bug is one of the most accessible core exercises for beginners over 50, because youre lying on your back, Tang says. If you have cranky knees or hips, this exercise allows you to lie on the ...

Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).