There are tons of benefits of stretching.
For one, stretching boosts flexibility, which can improve both your
short-term and your long-term range of motion. That’s important, since a
better range of motion can mean better muscle recruitment during your
workouts. For example, greater range of motion in your hips and knees
will allow you to sink deeper into a squat. Ultimately, having a greater
ROM will make it so you're able to do more exercises—and do them
properly.
Read more about stretching here