I hear ya there too! I had a knee injury and so I can't run anymore--but I also live in the city and I'm not too keen on taking brisk walks by myself! I try to do yoga every morning (low impact) and when I can I dance around my house--but I still don't feel like I'm in great shape (especially compared to high schoool!) If I find something that really works work for me--I'll let you know. Please do the same for me! Thanks, take care!