As for Myth One, yes and no. It's the time under tension that really matters, and for hypertrophy the load the muscle sees is the key, and it needs to be enough to damage it. Myth Two again, yes and no. You can only build so much muscle, your body can use only so many calories before it just starts storing them as fat. Myth Three, they're right. Doing the exercise properly is more advantageous than doing one that's supposedly easier on the joints. It's like a bad driver buying a 'safe' car like a Volvo or a Saab, it's missing the point. Leg extension machines are basically just knee sheering machines, I stay away from them. They're right again on Myth 4, it's BS. Haycock has some studies on this over at his site. Sore muscles are still capable of being exercised effectively, and protein synthesis still goes on. I believe the studies he has there show a 36-48 hour window for muscle repair, after which you should exercise again, which is the basis for the Frequency principle in HST training. For Myth Five, they're right again. There's little to no evidence showing stretching helps prevent injury. Doesn't matter to me though, it feels good and it's a good way to get my mind into destroy mode before working out. As for the Swiss Ball, it's great for crunches but I don't do any exercises like bench presses on it. As for Myth Seven, there I'd disagree with them. Machines have their place, but nothing beats a good set of free weights ofr building strength and mass, and they're a hell of a lot essier on the wallet too. To me, and as they mention in the article unless you're injured and recovering, there's little point in isolating muscles. If they're lagging that much you're not doing the exercises properly and should switch to one you can do correctly.