Pass out quicker after donating blood?

[Felix007]

Average adult body has ablut 5 litres of blood. Will i pass out quicker in partial suspension hanging if i donate half a litre before?

 

[BlackWednesday]

Maybe, but I doubt it would be a huge difference

 

[losing hope]

Wondering if the same applies to SN, i.e. will i pass out quicker?

 

[Felix007]

Wondering if the same applies to SN, i.e. will i pass out quicker?

Thats what im wondering aswell, stupid SI …