I just bonked this past Sunday ride, and it was the first time in years of riding. So I took up a ride in the van [to recover?]
I have bonked and recovered before. This time was different as my heart rate rose and my blood pressure dropped to 102 over 62.
Some rest, drink some fluids including electrolytes and water, eat fruit, eat cycling gells ...
Could be a number of things causing this, as others have mentioned in the comments just moving your hands around during the ride might be the fix.
You didn't mention what type of riding you're doing, but as someone who had similar concerns after a decent MTB ride (around 50km), here's a few things I did and was advised to try
Worked on using my core to hold ...