Little change, big difference

So tonight, when I was doing some strength exercises, I changed things up a bit. The biggest change, was on the squats I do. I have a barbell resting on my shoulders and basically do your typical squat. Today however, each time a squatted down, I paused for a second. It might have been less, but it felt like forever. This difference really made my legs ignite. It was incredible. I was actually breathing heavy even. I couldn't believe how such a small change could make such a big impact. I'm guessing my legs will be a little stiff tomorrow. But in a good way!!