I ask about KSK 1.0, how is it possible using its 8RM to make series of 12 reps in phase 2 after only a few sessions? Is it possible to progress so fast, since you are not a beginner? Thank you for your answers
You can rest in between hands if you need to.
If you start with 8RM on one hand, you can probably do 5L/5R without resting right from the start, so you're already doing sets of 10.
After 3 weeks of phase 1, it's not a big leap do a set of 12 on one hand (with your previous 8RM). You might not be doing sets of 12L/12R without putting the bell down, and your total session volume might go down from where you ended phase 1, but that's okay.
Edited to add:
Geoff calls the phases "Strength," "Strength-Endurance," and "Endurance." But I think of them as:
1. Building volume without over-stressing the grip.
2. Building set length with each hand.
3. Building volume with longer sets.
One dimension of progression within each phase, especially phases 2 and 3, is being able to string together sets on both hands (for a given rep count), without putting the bell down.
Hint: Be a little conservative with your bell choice. Snatch RM is a little vague anyway, much more so than with a grind. Don't start with a bell where there's no way you could get a 9th rep to lockout, or where you really couldn't hold onto the bell. Make it a bell you can get 8 solid aggressive reps with.