Look for a threaded rod with an adjustment nut at the point where the lower rod connects to the upper one. You can adjust the length of the linkage by turning the nut clockwise -- to shorten it -- or counterclockwise with pliers. If the nut is stuck, hold the rod steady with a second pair of pliers while you turn it. Lengthen the rod if your tub doesn't have a stopper and it isn't holding water.
A 200-pound person burns about one-third more calories than a 150-pound person.) So a brisk walk, covering three-and-a-half miles in an hour, burns about 280 calories. When repeated each day, this excellent habit burns about 3,900 calories -- more than a pound of fat -- every 2 weeks.
When it comes to burning calories, your heart rate is much more important than what you are doing. If you can reach and sustain the same heart rate for the same amount of time you will burn pretty much the same amount of calories regardless of activity. For the same length of time, riding flat out will burn more calories than a casual walk, while walking briskly can burn more than a casual ride. When you have a set distance, cycling will burn less calories than walking at the same level of effort, as the higher speed of the bike means you'll finish the distance faster.