How to convert inches to millimeters
Understand the relationship between inches and millimeters.
One inch is internationally accepted as being equivalent to 25.4 millimeters.
Written as an equation, this relationship is represented as : 1 in = 25.4 mm this official, standardized measurement has been set on international records since 1959.

OPTIONS:
- Literally translated a millimeter by the united states postal service, the measurement refers to the value of the unit of mass used in the unit. For example, an ounce (gram) from a kilogram lumber pulp can be considered equivalent to millimetres.
- Both inches and millimeters are units of measurement. Inches belong to the english system of measurement, while millimeters belong to the metric system of measurement.
- Multiply to get the number one digit. Subtract two inches from your unit to get the x/0 split as your unit weight (between 11 per-inch).
- The standard measurement used in comparative quantities sets per squared mile of an atomic meter for the length of the atomic meter. This measurement states the exact weight of 2 billion square kilometers of air.

Both inches and millimeters are units of measurement. Inches belong to the english system of measurement, while millimeters belong to the metric system of measurement.

How to exercise with friends
Choose friends you want to spend time with.
Becoming exercise buddies is a big commitment. You will be spending time together each week for long stretches of time.

OPTIONS:
- You will be doing a lot of different things, from classes to sports, so choosing friends to work out together will help you build up a good work ethic. Before becoming friend with a friend, make sure that what you are doing does not violate any school standard.
- This can be much longer than you may think. Think about who you want to spend time with, and talk to them.
- The two (or more) of you should enjoy each other's company, and commit to supporting and motivating each other. You will have to know that this will make a very close bond between you and the workout friends, since you are sharing the same physical exercise.
- You'll get to talk to your friends and make new friends. You'll be doing as much exercise together as possible, so that you're each exercising at an appropriate rate for the type of exercise you're engaged in.

The two (or more) of you should enjoy each other's company, and commit to supporting and motivating each other. You will have to know that this will make a very close bond between you and the workout friends, since you are sharing the same physical exercise.

How to become an aerospace engineer
Develop sound math and science skills in high school.
Aerospace engineering requires advanced science and math skills. Take classes in chemistry, physics, algebra, calculus, and trigonometry in high school to get a head-start on developing the skills you'll need.

OPTIONS:
- Some four-year colleges offer pre-schooling courses in engineering. Some high schools offer an all-family education program which focuses on automobile mechanics, mechanical engineering, and physics.
- You should be at least 18 years old when you begin your aerospace engineering career. You can get an an a in about five years.
- Speak with your teacher about whether engineer training is right for you. If you need to grow intellectually, the best way to do so is to find a training location.
- Put your best effort into these classes so you can earn high marks. A high gpa will help you get into a good aerospace engineering program in college.

Put your best effort into these classes so you can earn high marks. A high gpa will help you get into a good aerospace engineering program in college.

How to get your legs and butt in shape
Run stairs.
Find a set of stairs that are not too steep and that are 30 or more steps high. Start off by running up one flight of stairs, then walk down one.

OPTIONS:
- Then do 10 or 15 steps to jog across the floor faster. Then, next, the run up two stairs you will repeat.
- For a 30 second run, take 10 steps and then finish the 10 steps moving down to the ground. Sprint to the stairs and then up another (and then down from there! You won't have enough time to rest).
- Then jump up and down each stair two or three times to get a good feel for how your feet operate. After you learn how to put the muscles in your legs into shape, you can show off your muscles by using them in other exercises.
- Next, run up two flights and walk down one. Finally, run up three flights and walk down one, completing the circuit.
Next, run up two flights and walk down one. Finally, run up three flights and walk down one, completing the circuit.