A properly performed breakfall should have the 'slapping' hand taking 95% of the impact. If your body is taking a jarring impact, your hand is hitting the mat too late.
Good luck, hope this helps!
Hi there, could you expand? You mean in my case approx. 85kg of my 90+ would go through the hand?? And via the arm into the shoulder? I do practice "soft ukemi" from some throws, but have always seen the hand as a means of orienting my body to distribute impact evenly, rather than taking impact itself.