Hi I just completed W4R2 and I am planning on going on holiday next weekend for 2 weeks, I wasn't going to run during this time so I will stop at W5R2. I just wanted to ask some advice about when I get back, should I repeat week 4 or 5? how much fitness will I lose by not running for 2 weeks? I want to make a return plan so I don't lose momentum. I am loving this program and will definitely be recommending it to all my friends! Fantastic!!