No intra-abdominal pressure cut-point is known to place women at higher risk of pelvic floor disorders. The bans were inherited, not measured.

40 pages, 9 lessons, every claim cited in the margin beside it. Sources are clinical: NHS, BJSM, Cochrane, and primary studies from PubMed.

Inside — the nine mechanisms:

• What the six-week check actually screens for, and why 118 clinicians agreed no fixed date should be given

• Why the finger test is unreliable, and why diastasis prevalence falls from 60% to 32.6% on its own

• Pressure, not exercise names the variable that decides how your midline responds to anything

• The diaphragm and pelvic floor as one canister, and why exhaling through effort recruits the floor

• Hypertonicity: the failure mode kegels make worse

• 31% prevalence across 35,064 women and the Cochrane evidence on what treats it

• Which layers a cesarean divides, and why the muscle is parted, not cut

• Lactation costs about 670 kcal a day, with little metabolic adaptation to soften it

• The pelvic floor tests NHS services publish, and the progression that follows them

You get: the 40-page illustrated guide (PDF). Instant download, yours forever.

Read lesson three before your next session. If you have been avoiding a movement without knowing why, that chapter gives you the reason or removes it.