I am having right knee pain or stiffness in the knee when i get up and walk few steps after sitting for a long time. This problem is there since 4-5 months. I thought it should be some sprain and it will recover, however, it continued for 4-5 months. I again tried treadmill walking and cycling with some basic exercises since 1 week. But still i am having this type of knee pain after getting up from sitting position and pain in both the knees while climbing up stairs. My question is that can i continue going to gym and walk the motorized treadmill and do the cycling wearing my sport shoes ( i am weighing 79.5 kilos) or else should i hold back. If so please suggest me what can be done to eradicate this knee pain and to lose weight in different manner.