I am 65 years old male .My BMI is between 19 and 22. My body structure is normal and my height is 170 cms and weight is 60 kgs. I used to walk in the normal speed for not less than 30 minutes at least five days in a week. These five days walk is sometimes continuously for 5 days in the mornings or sometimes in the alternate days. I am a type 2 diabetic and hypertension person for the past 3 years and it is kept under control with medicines. I am pure vegetarian. How can I control my knee pains developed during walking recently.