I've been on SS for 6 months with the goal of getting stronger for sports (surfing and mountain biking in particular). Had to stop surfing for a while to deal with some tendinitis and so my wife and I went mountain biking for the first time in several months this morning. Wow! Just like my surfing, my mountain biking had been going downhill (so to speak!) for several years now. One hill in particular has been causing me problems. This morning I zipped right to the top! All those squats really make a difference! My wife: "Wow, I feel so strong!" She's been doing SS with me, but has been a bit skeptical so far. Today, on the trail, she became a believer! This program is a revelation! Can't wait to see how our new legs work on the ski slopes next winter (especially after 4-5 more months on the program)!