@rjayasinghe That relates to me indeed. Funny thing: I am not heavy, BMI cca 22. Nevertheless last year I decided to lose about 1/10th of my weight. My best times on 6/8/10km tracks improved significantly during and after that time. After all, not carrying several kgs of weight makes indeed a difference, though I am not sure if all of that was fat, I guess I lost also some lean mass there.