Undeterred by my earlier misjudgements, and partially in my own defense, I'll give it a go.
The original reply mentioned immunity from the effects of acceleration to which I objected, adding the word cushion. In hindsight, the first two people I replied to probably had a better understanding than I assumed.
In the blood cell example you raised, there are two things going on: low mass and force distribution. Blood cells don't have much mass to begin with so 100X doesn't amount to much. Plus, they're really small so the resulting forces don't have much leverage.
Putting a body against a soft cushion or in a liquid during acceleration spreads out the distribution of forces imparted. As a generalization, it's not force that breaks stuff, it's pressure.
I've seen the same principles at work in optical encoder components that undergo very high shocks. They don't break because they're really small, really light, and there's a drop of gorilla snot inside each one.
This should be easy to test. Put a volunteer, or a chimpanzee, into a centrifuge with breathing apparatus suitable for REALLY high pressure diving. Fill the compartment with... not water, but something as close to the density of a human body as possible.
Then... SPIN!
I'd bet the subject could withstand at least 30 G's.