A few people mentioned not being flexible enough for a smaller frame a couple posts back. It's actually really easy to develop flexibility through daily stretches: Every morning, just straighten your knees and try to touch your toes. It shouldn't be so far that it hurts, but you should feel it in your legs. Hold for six seconds, repeat a couple times per day. Two weeks ago, I wasn't able to get very far past my knees. With daily stretching, I'm touching the floor