"I have tight Hamstrings" A phrase I have heard over and over and over in the last 14 years. In the past I would have shown you how to stretch them.
Now things are different. Now I realise that the word TIGHT can mean a huge range of things. It tells me how it FEELS to you but not the reason for WHY it's feeling that way.
Are your hamstrings tight because the muscle fibres are in spasm? If so then a muscle release like this one may help. Stretching a muscle in spasm will only make things worse.
Are your hamstrings tight because the muscle fibres are fibrotic and have got stuck together? If so then a muscle release won’t work. Stretching may. And so will massage (Including self massage using a tennis ball like this).
But what if your hamstrings tight because they are protecting your knee joint? Well then, trying to release this muscle with stretches and/ or muscle releases is just going to make the knee joint even more vulnerable and can lead to a whole host of issues. This is where strengthening exercises for the glutes such as this one may help as well as activating the hip flexors with this exercise.
Or your hamstrings may feel tight because your sciatic nerve is tethered down somewhere. And each time you move your leg it pulls on the nerve. When this happens, the body will send the muscles around the area into spasm to prevent you from moving further (as the body is worried that you're going to injure the nerve and will do anything to protect it). If this is the case then nerve mobilisation like this one may be the answer you're looking for.
So, yes….you may have 'tight' hamstrings but you first need to figure out WHY. It's not always as straight forward as just stretching whatever feels tight.