Raised blood pressure and heart rate
Constriction (tightening) of blood vessels in the skin, resulting in a drop in skin temperature
Less oxygen carried by the blood
Stickier blood, which is more prone to clotting
Damage to the lining of the arteries, which is thought to be a contributing factor to atherosclerosis (the build-up of fatty deposits on the artery walls)
Reduced blood flow to extremities like fingers and toes
Increased risk of stroke and heart attack due to blockages of the blood supply.