Hello. I’ve only been running for around 3 years regularly . Unfortunately about a year ago I started getting knee pain in my right knee. I’ve been to the physio which helps . I was told to strengthen my quads and use foam roller . I was also told I have chondromalacia. I’m 6ft 2 and weight about 93kg. I use to lift weights so I have some muscle. I’d like to get to around 85kg or even 83kg. Do you think this would help reduce the aches a little ? It only really affects me going up the stairs . Also I tend to run on concrete. Should I use treadmill more when gyms are back open? My best 5k is 21.58 and 10k 56 mins.