For 5 years, once a week I run 10 miles, do squats with a bar (2 times a week) and every workday ride a bicycle 10 miles. Last time I ran a 3 mile longer distance. Since then the first week I felt pain in my legs, but not severe, and after this week I didn`t feel pain, but my knees crackle and pop when I fold my legs. Do you have any suggestions about how could I try to get rid of this problem?
Thank you in advance for your attention.