You should because it makes your muscles more flexible
buttocks
to stretch out your muscles. muscles like your leg muscles and shoulder muscles.
Stretching helps to warm up your muscles. when your muscles are warm, it is less likely that you will pull a muscle or sustain a injury. .
Quadrilateral
Yes, This will allow your muscles to relax during the exercise instead of tightening up and pulling.
To prevent sore muscles when you wake in the morning: You should stretch before bedtime and when you wake up. You can also get massage or get a paste for the pain.
You are assuming that it is possible to increase the elasticity in your muscles, and it is not clear that it is. Muscles are connected to tendons (that are connected to bones). Muscles and tendons work together. When one uses stretching exercises to increase flexibility, one is actually always stretching muscles along with tendons. It is not really possible to separate them. If you want greater flexibility, do a whole body stretching routine 2 or 3 times weekly. It's very important to stretch muscles and tendons that are warm and full of blood; otherwise, you may injure yourself. So, stretch after exercise rather than before exercise. It is also important to avoid ballistic stretching if you are after increased flexibility. Stretch slowly and try to feel the stretch. Stretch just to the point of discomfort and hold the stretch for at least 20 or 30 seconds. Do not bounce. If you follow these guidelines, your flexibility will gradually improve. Remember, though, that there are great individual differences. Just because someone else is able to do a certain stretch does not mean that you will be able to do it. So, 'listen' to your own body. ----
Well, first they jog then they stretch, so they don't pull muscles.
bounce the body while performing a stretch APEX:]
The muscle in your shoulder.
No, they contract.