It's best to keep your leg as straight as possible and arch down you'll feel muscle in their that's just meaning your stretching which your increasing flexibility. To become more flexible you would want to stretch more until you are satisfied with how flexible. I am a level 10 gymnast and I stretch a lot to become more flexible. Things I do is do my splits, right, left, and center, and I do the wall stretch and push myself against the wall as a couple of my stretches. But before you do all of this make sure you stretch out your back, arm, leg, stomach, neck, ankle, and a lot of you muscles or else you can pull something. I want to become more flexible and i do stretches a couple of times a day for 20-30 minutes. I have been doing it for a week now and I am already seeing a difference. Swimming will exercise you and so will yoga but out of these two to become flexible yoga. You have to continually work on stretching certain muscles out. It will take a while. stretch every single day and do the splits then you will get more flexible. try to stretch or do the splits for 3 minutes each day and you'll get better I improved my flexibility drastically-I could not even touch my toes, and now I can touch my head to my knees and my palms to the ground-by simply sitting on the ground and reaching for my toes. You can bend your ankles back as far as you want in order to grab your toes, and then attempt to point your toes. This will pull you forwards and bend you down. Hold this position for about 30 seconds. If you cannot touch your toes when sitting on the ground, bend one leg so that one foot is touching your opposite thigh. Then reach for the other foot. Repeat on both sides. Hold each side for about 30 seconds. However, if you do not have time to do this, there is an easier way, albeit one that takes slightly longer. Just stop bending your knees to pick things up off the floor. It will be difficult at first, but soon it will become natural. If you can do both, it will improve your flexibility quickly. stretch more (special stretching exercises for each and groups of muscles increase flexibility) google it to find some exercises. Exercise and do back bends By going to the gym, exercising, running, yoga, or maybe just simply stretching every day and night. There are lots of ways to become more flexible. A major factor of improving your flexibility is to do a variety of stretches every day to ensure that your muscles get used to regular stretching. After about a month you will definitely start to see just how much more flexible you are becoming, as your body will grow accustomed to stretching further out of its comfort zone, therefore pushing it to become more flexible. It will probably take about three months, I'd say, to really improve your flexibility to a much higher level than previously, depending on how flexible you were to begin with. Find about 5 to 7 stretches to do each day and keep this in a routine, then your body will gradually build up more strength to endure this kind of physical exertion and flexibility. After a while of doing these stretches your body will easily perform the tasks at hand as second nature, as it will be so used to doing it. exercise. By stretching a little each day, you cant just become flexible.