2
votes
2answers
99 views

Core training and muscle cramp?

I have started regular strength and core training for the part few weeks after years of no exercise. For the last 2-3 days I notice that I wake up in the night with a back ache that involves muscles ...
3
votes
2answers
1k views

Lower back pain when stretching hamstrings

I went to defence forces 4 months ago and have had intense training and stuff without no good physical base before. Had to carry a 60 pound bag for miles on my back etc and now having lower back pain ...