lower backache post run ?

[CiganoBoxer]

Hello guys any advice would be welcome ,I run between 25-30 mile a week , but past 15 months I been suffering with some lower pain /ache ,its always after a long run ,probably has gotten worse last 3 months as I've been running on a machine rather than the road, im a 17 stonies so the machine has worked wonders for less impact on my joints etc but seems to make my backache worse to a degree .
Its gone by next day so its not like I'm injured !? ...just post run for 12 hours have this lower poxy backache

[Noxy]

Yoga, or stretching of your lowing back. There are different ways of doing it.

[Winter king]

strech. and warm up .

[Ryan43543]

That problem might be the reason for your imperfect posture while running. A correct posture helps in preventing injuries while doing any exercise, because it prevents overstretching of muscles during workout.

[John_newman]

Here is some informative article regarding high-intensity work out for you. Check it out here's the link: https://www.borntough.com/blogs/news/hi ... ur-workout