Pretty simple? Just want to know if some of you guys that im sure have given blood think it's going to be fine to grapple in the morning. IT will be more than 12 hours afterwards thanks for the advice.
The lifespan of a red blood cell is about 3 months. So it will take that long for your body's red blood cell stores to be the exact same as they were right before you gave the blood.
But for healthy people this is not a problem. You can definitely grapple tomorrow, if not immediately after giving blood. You just might feel a little more tired than usual. But it's not dangerous.
I gave blood on Monday and wrestled pretty intensely two hours later. The next day, I boxed and had grappling practice. I felt really tired, but it was probably due to overtraining rather than blood loss. At least I hope so... Don't do what I did and take a break.
I have done that twice, and both times I regretted it. It felt like I was cutting weight even though I wasn't. It goes away after 2 days though. Either that or your body gets used to a lower blood cell count.