Wow, I'd forgotten what a no shit set of 20 back squats feels like. The last time I did a 20RM was a couple of months ago and I got it out at 100kg. I've been reading about a lot of old school lifters and athletes and the common theme is take your 5RM deduct 40 pounds and go for 20 reps. So, roughly, 5 RM 140kg - 20kg (about 40 pounds) = 120kg for 20 reps.
I can squat 5 to 10 with 120 pretty well (not easily) so I thought it's a good starting weight. 12 reps in I was going alright reps 13-18 I started getting a tingling sensation in my calves and glutes and started redding out. I went for the 19th reps and collapsed at the bottom position... then fell forward then couldn't stand up for a good few minutes.
Even though it's the same response to a short metcon (like fran), the lactic acid is lowering the pH of your body and interrupting the normal workings of... well everything, it felt completely different. I was basically numb for about 10 minutes before I felt like I could function again.
So, why do this? Because this gets you STRONG! The hormonal response, the release of HGH and increased insulin sensitivity are enough but for me, the main component of this is metal training, the ability to get under a heavy weight even when you're already buggered and seeing stars, just for 1 more rep... then another... then another.
Here's an except from Starting Strength author Mark Rippetoe:
"Ball Busters', Widow-Makers, Man Breakers. These are words used to describe the 20 rep squat. But back in the golden age of bodybuilding, before expensive supplements and better living through chemistry, this is how the old school weight lifters got BIG. If you can suffer though the 6 weeks that it takes to get through this routine you will grow bigger legs and even bigger balls. Mark Rippetoe says, "Trust me, if you do an honest 20 rep program, at some point Jesus will talk to you. On the last day of the program, he asked if he could work in." Don't say I didn't warn you"
Workout:
20 RM back squat
Post weight and responses to comments.
On a lighter note, here's a video of me power snatching. Any comments are welcome.