ics19OlivShmusculoskeletonsystem

**Letter 1:**
Dear Blake Fit, My choice for the best cardiovascular machine would be the treadmill. It can change speed to make you go faster or slower, which can give you good exercise, especially in your legs. Also, it has various programs you could do and feels like you are doing your daily walk, jog, or run.
 * 1) Treadmills
 * 2) Stepmills
 * 3) Elliptical
 * 4) Jacob Ladder

My second best choice would be the stepmills. The stepmills are great, but they don't have as many programs as the treadmill. The good thing is that they are similar to your everyday steps upstairs. The stepmills are also hard to use and they have less of a calorie burn

My third best choice would be the elliptical. One big reason it is not as good as the others is because it has few programs. Also, it is not similar to your life because your feet move in a unnatural motion. Adding to that, it is not a simple machine to use. But, it has the same calorie burn as the stepmill.

My last choice would be the Jacob ladder. This is because it has only one program you can use to exercise. The Jacob ladder is not something that is from your everyday life. It is also a complexed machine that is not easy to use. The one good thing though is that it has a high calorie burn.

=Letter 2:=