- Feet at 30 degrees. This allows your adductors to shorten during the concentric contraction and assist with the load. It takes stress off the knees during the eccentric phase, and it allows you to squat with the proper depth without stressing the quads.
- Wrists straight. You don't want your wrists to do any pulling during the lift. Keep the thumb over the bar and make sure your wrist is straight.
- Push your chest out. Pushing your chest out creates a natural arch in your back; it is something that you want to do. It puts the spine in a more neutral position so that the weight doesn't put too much stress on it.
- Use the Valsalva maneuver. Don't "exhale" during the concentric part of the lift. When lifting for endurance this is fine as it can allow better recovery and more endurance, but during a heavy lift you want to fill your stomach full of air and exhale at the top of the lift. Think about it, when you're on the toilet do you exhale as the big one emerges or do you exhale? Your body knows what to do when its under stress. The key is now to think about it.
- BREAK parallel! This part cannot be stressed enough. Parallel is when the patella is higher in elevation than the hip. This causes your hamstrings to get a better stretch at the bottom and allows them to contract harder and push with the load. The squat should work the hamstrings, glutes and quadriceps muscles so evenly that no imbalance can be caused. If you are not hitting parallel, it is a partial squat and partial squats stress the quads without stressing the hamstrings. We all know that overdeveloped quads and weak hamstrings contribute to anterior cruciate ligament injuries.
- Keep your back the way it should be. This depends, if you're doing a low bar squat then you want to keep your back around 45 degrees. You want the bar to be parallel to the feet at all times, knees will follow your toes and you will go slightly forwards. The hips and knees should break simultaneously and they should extend simultaneously, but if you have trouble learning this then allowing the hips to break first can be used as a tool. If the person still cannot get used to breaking at the knees first, then using proper depth box squats as a tool for a few weeks will program the proper motor pattern. If the knees are the first thing to break, then the bar path will be straight down and will cause stress to the knees. You want it to be simultaneous!
- Always FACE the rack! Never walk backwards to rack the weights. That is an accident waiting to happen. Take about 2-5 steps backwards after you unrack the weight and do your sets, then move forwards with the weights so you can see where you are racking it. If possible, make the bar touch the post before the hooks that the bar rests on so that you know for sure what you're hitting.
Now, here is the concentric difference between the two squat variations: the high bar squat primarily stimulates the glute muscles, and the secondary muscles are the quads. The low bar squat primarily stimulates the glute muscles, and the secondary muscles are the hamstrings. See what I'm saying? So if you want to work your hamstrings harder, do your squats with hip extension at a greater distance with low bar squats than high bar squats.
I prefer high bar squats; they are more natural. I also feel the hamstrings get a good stretch at the bottom regardless of the bar position and the hamstrings are worked heavily as stabilizers even during a high bar squat. Whichever you choose is highly up to you, but high bar squats also allow deeper depth. You should always squat as low as you can, but if you can't, parallel squats work you just fine.
