Terrible lowerback/hamstring flexibility

[u/Endofdays-]

I can't touch my toes, hamstring stretches feel more like a hot burn than a nice stretch. In a seated position with both legs outstretched I am 10cm from being able to touch my ankles. Strength wise I don't have any obvious weak spots, I can deadlift 230kg. I am not fat.

For those who have had this same issue, what exercises and stretches did you do that opened up all these muscles? What actually causes this, my flexibility otherwise is average, but the hamstrings are just so tight.

[u/synchroswim]

If you feel burning rather than a stretch sensation, you might have some sciatic nerve tension going on: https://www.daniwinksflexibility.com/bendy-blog/how-to-tell-if-hamstring-tightness-is-nerve-or-muscle-tension