I started playing in May, and came down with a load of injuries, which should be behind me soon because of seeing a physio. One thing that surprised me is that I play with my right hand, but got mild tennis elbow in the left arm too. Has anyone else experienced this? This week a top player pointed out the errors in my footwork and shots that would lead to injury. I have my second coaching session this weekend.
Holding your phone or a tablet in bed while laying down? Or spending a lot of time holding a phone with the elbows bent? I doubt it comes from badminton for your left arm or may be even both.
It's too long ago to remember whether I did any of those things now, but I can't see that being the case. I would have had to have a radical change in habits temporarily, and it went away as I recovered and hasn't recurred since.