I've been on Exante for almost six weeks, and introduced daily planned exercise in week 5 (using a rowing machine, because apparently it exercises 84% of your muscle groups without putting weight on the joints) - although nothing too excessive, because I'm not very fit and I am also very lazy! Just a small number of minutes without fail every day, which I plan to build up gently and gradually over the months and years ahead.
A book I have been reading suggests that you need to add spontaneous exercise to your life as well as planned exercise, and I have been doing that since early in week 2. In order to build more movement into my sedentary existence I decided I neded to add lots of tiny bits of exercise throughout the day. So I made changes such as always going to a different floor to go to the loo (introducing lots of stairs, because the 2-litre water consumption guideline means I need to go to the loo a lot!), or making sure that I put something away as soon as I think of it instead of waiting until I happen to be going in that direction, or parking a bit further way from where I need to go and walking the extra distance, or going for an outing at the weekend which involves a bit of walking. Tiny changes, but it means I'm moving about much more often, which can't be bad.
For me, a formal exercise program is never going to be successful in the long term because I simply don't much like exercise. I'm getting old now, so I can say that I know from experience that this is true for me. However keen I am at the beginning of an exercise campaign, I will invariably have given up completely within six weeks. So my approach this time is to build lots of less challenging opportunities for movement into my life, so that I have no excuse for giving them up and will have to continue with them. The only formal exercise I'm planning is to use the rowing machine, but I am deliberately keeping that unadventurous - my target is just a minimum of five minutes a day, at a leisurely pace, and only doing more if I feel like it. I hope that I will be able to keep this up for longer than my previous temporary flirtations with every exercise programme ever discovered!