Should I stay or should I go now?

So my friend is coming to stay with me for the weekend – she is also my diet buddy and I was mega grateful when she suggested that we go swimming this weekend and that she’d cook later on – in the past we have been very much foodie friends – we’d eat lunch out and then get a takeaway for dinner so it’s great to think we’ll be able to change that dynamic and find these other things to do :). So I’ve been thinking about going to Zumba FOREVER and had asked friend to go today with me and now I’m lying here in bed and I have ‘the dread’ and I really don’t want to go…I don’t even know what it’s about but I always do this and even did it on Wednesday – I had rearranged and appointment with the life coach so I could go to a new self defence class but then I got ‘the dread’ and talked myself out of it. I’m not even sure what I’m worried about or why I’m talking myself out of it….crazy brain. Argh