Please help. I'm desperate to lose weight and get fitter. I'm 45 and a size 18. I really want to start running but I'm scared. I've never run before. I walk daily, but that's clearly not helping my weight as I haven't lost any, despite 10,000 daily steps. Can I actually do this? Has anyone else been in a similar position and successfully started running? Please send motivation and support. I've downloaded the couch to 5k app.....