$30.13 Amazon. Perhaps the best bargain in antivirus software today, McAfee's LiveSafe provides a shield for an unlimited number of Windows PCs, Macs and Android smartphones and tablets, although there's no antivirus component to the iOS apps.
1 He/she will likely be using a step-to pattern in which he/she places both feet on each step. 2  18-20 months-By the time your child is this age, he/she should be able to walk down the stairs as well, placing both feet on each step and using a railing for support.
11 calories per minute climbing stairs at a fast speed. 11 calories per minute on a stairclimber or stair-treadmill; 19 calories per minute running up stairs. 4 calories per minute walking down stairs, about the same as walking on flat ground. 1.6 calories per minute standing on an escalator or in an elevator, one-third of the calories expended by taking the stairs at a slow pace. Over the course of a year, you might lose over half a pound if your only lifestyle change was taking the stairs for a minute a day. Stair climbing challenges more muscles than walking on level ground or standing. You use your gluteus maximus and hamstrings to climb stairs.