I only did Jacobs Ladder 2x today. Last night I had circuit training and I went all out. My legs were so stiff I didn't think I would make it up once. On my last climb I was 99% sure I would have to sit for 10 minutes before continuing up just when God sent me an angel in disguise of a sweaty stranger running down the stairs giving me a big grin and 2 thumbs up. I know it was for me because there was no one behind me.