How does stretching before exercising help my exercise routines?

It's : Vital to get the blood flowing to the muscles. And to loosen them up before your workout. It helps prevent injury. And allows you to maximize the workout Preparing the muscles for the stress. You should also stretch after the workout. Prepares the muscles for recovery.

Warm up first!: Stretching is important prior to exercise and may play a role in the cool down process as well. First, one needs to warm up prior to any stretching. Many muscles,tendons and ligaments are strained by stretching first. The stretch loosens the connective tissues and allows better movement during your physical exercise. Remember, warm up, stretch, exercise, consider stretching and finally cool down.