Why is the pressure pulse bigger after exercise?
I would guess that pulse pressure increases after exercise. As I understand it,


Systolic pressure is simply resistance against the pressure wave of the ejected blood. Since the stroke volume is increased in exercise to deliver more blood, systolic pressure will be definitely be increased.
During diastole, the major resistance to flow is due to peripheral resistance (major arteries now assist flow by releasing stored energy), and this is reduced in exercise due to vasodilation. Although there is more flow, since the resistance is markedly reduced, diastolic pressure may drop.


Hence, pulse pressure should increase.