I'm currently part way through the application process, the doctors have got my medical forms and all that so i'm just waiting for them to finish then. I'm looking at joining either the Fusiliers, or the 1st Battalion the Rifles. At the minute I am going on a run 6 days a week, varying distances, but because of years of inactivity and ******* around in my youth I had to start from scratch, so my 1.5 mile run time is around 11.30/11.45 at the minute. I'm doing 100 press ups and 100 sit ups a day - Press ups are a piece of piss, Sit ups kill my back after about 20/25, but I can manage about 35 before I can't do anymore, and have to rest, but I can still manage 50/55 inside 2 minutes. I was speaking to a Major in the Rifles yesterday whohas been in the army 33 years and was giving me some advice, and one of those was go out walking, especially if I can get on rough hilly ground and put some weight on my back... So I have a couple of questions: 1, Will the sit ups be a problem? I can do 50 inside 2 minutes, but I HAVE to stop halfway, because physically my back will not let me do anymore without rest. 2, I brought myself a decent sized hiking rucksack to go out walking with, and I've got myself a 20kg bag of sand to put in it. I went out for 10 minutes earlier with it on to see how comfortable it was and when I got back and took it off my right shoulder and right side of my neck were in a fair amount of pain, so is that normal for the first time with weight on? Or is it maybe too weighted on one side? Also, this sounds silly, but because of its size, it's pretty much impossible to walk upright with it on, so 1, Is it normal to walk with my head and down and my back a little arched? and 2, Is there a big risk of injury doing what I am doing? Or should I take a little weight out? How the hell some people can walk with 100+lbs on their backs for hours is beyond me! Sorry for the long post, and any advice is appreciated.