Thanks a lot for your thoughts and inputs Stephen, Anita and Ishmael. I am very glad you all have found your ideal exercise form and are committed to staying physically healthy.

Stephen : I can feel a change already when i am working on my habits. My parents are particularly very happy with this change and are encouraging me further.

Anita: Excellent point about the knees. I am rather careful about this as well and have consulted doctor to get it checked before i started.

Ishmael: Yep these days I am trying bits of quick sprinting and alternate walking at the moment. It really gets me sweating and makes me feel like i am pushing. You are absolutely right about stretching in particular.