This is a test of commonsense. Complete the next sentence:

How to measure inseam on jeans 
Grab a pair of jeans and lay them flat. 
Stretch them out over a solid, smooth surface that's large enough to hold the entire pair of pants. If you're trying to find your optimal inseam, pick a pair of jeans that fit you well and whose legs are your preferred length.

OPTIONS:
- If it is possible, lay the jeans flat on a smooth surface. If one leg is dramatically shorter than the other, something with a built-in hem can help.
- Measuring a pair of jeans works best if the jeans are properly fitted to your body type. Smooth the pants out and, if necessary, fold them in half.
- Your ideal inseam measurement comes in the feet. The feet should be the same width as your arms.
- If you want your jeans to have some variation in legs' height, just go with the hottest variety of jeans. You shouldn't go for jeans that extend beyond your hips.
Measuring a pair of jeans works best if the jeans are properly fitted to your body type. Smooth the pants out and, if necessary, fold them in half.