Hello Everyone, Just joined BC as I've been following this forum for a while now and the people and information here are great! I've been playing badminton for around a year now and as of lately, after every session of badminton (3 hours-4 hours) my forearm top muscle is feeling tender and sore but generally goes away when I play again the week after. I myself is quite an athletic person coming from various sports for many years and during my initial 10 months or so I've not been feeling this soreness. The racket I've been using is Li-Ning N9ii and tension has been 24lbs, then to 26lbs and lately have switched to 27lbs. Reason I've gone 27lbs is not because the higher the better logic. I felt like I play better with 27lbs compared to lower tension as I feel the additional control and power I have with the extra tightness. Question I have is if the soreness is caused by this extra pound of tension (never had problem with 26lbs) or maybe because my technique is getting better and better as I learn how to smash the shuttle with more force? Another possibility are when I opted for 26lbs at a shop they did not actually string to specification? Because I've bought a stringing machine and have been stringing 27x28lbs myself which might be more accurate? Keen to hear what feedback everyone has.