Thank you so much for reply. I always had lower back issues since I gave birth, but this year sometime after Christmas, it got really worse so that I could not hold my work bag…I purchased strengthening program that I can do at home and did it daily during the winter. its mostly squat, lunges, and core work using body weight and resistance band. As I mentioned, I usually play outside, so it worked out well during winter when it was cold outside. I still do strengthening training, but I do it less frequently since can play outside more often (now it’s warm, but very rainy). partly because of weather (I did not want to ask my husband to feed me when its cold outside), whenever I have a chance, I practiced serves. I didn’t put target since i still have to be very conscious about not moving backfoot around (when I try to work on something else, my Blackfoot start to move around) so I tried not to think too many other things. I want to do flat serves really, but I have tendency to do slice serves. i think partly because my toss position and also not being able to do pronation well for flat serves. I have been practicing serves at least twice a week, or even more (just serves for 45′ or more, and not just 5-10′) these days. so I feel better about serving. I do not think I mastered platform yet so I have to be conscious about it still, but I also started to feel that I can start adding target. if you have any good advice on improving flat serve for me, please let me know. I will start to add target.
Thank you so much for reply