this is you then.. 01/01/2016 was 89Kgs /196.211 23/12/2016 80kgs. /176.37 03/02/2016: 79Kgs /174.165lb I remember hearing the following stat. 80% of weight loss is through carbon dioxide from the lungs. If you are going to high altitude and exerting, this would have to be a good change to shave off a good few pounds? Be safe and know your routes?