Not for the first 2 weeks, youre body needs time to adjust. I've only just started(end of week 10) with the 'run a 5k' app it's only 30mins a day 3 days a week that's enough for now, have to take it easy with so few calories (not saying its easy,god the sweat and sometimes pain) in my book it advises no high impact exercise, the cambridge website I believe has a walking program PDF you could take a look and try that out? Xx
13.3 start weight 11.2 right now and going down!