How intense should the Foundation exercises be? How hard should I consider them before I move on?
For some context, I'm coming from Pavel Tsatsouline's work (Enter the Kettlebell, Simple & Sinister, etc). Very heavy weight and high (sometimes daily) frequency, but low reps and low sets (2 sets of 5, etc). Jump to Foundation One and I'm doing five sets of dozens of reps, once a week. The burn, people, the burn! I can do the exercises no problem, but the four and fifth set, or once the reps climb into the dozens, I start to have a problem.
If that's a design and not a flaw, no problem. I have no problem being patient. But to be a bit more specific, I can complete the push-up segment, but it's a struggle. I can maintain good form all the way through all the reps on all the sets, but it about takes all I've got. Under Pavel's logic, that means it's probably too hard and I should step back a level or two. Is it the same here? Should I consider near-failure too hard, just right or perhaps even not hard enough?
How does burn play in? I'm here more for the soft-tissue strengthening more than the muscles and strength (though I'm happy to be Hercules). If an exercise burns like the dickens but good form can be maintained, do I move on or stay there until there's no more burn?
Thank you for the insight!