The use of cannabis has all kinds of physical consequences. The most important ones are:

• Increased heartbeat. Generally, it slows down in about 20 minutes.
• Drop of the pressure in your eyeball.
• Change of blood pressure.
• Sense of cold or hot hands and feet.
• Discoloration of the white of the eye to somewhat pink because of dilation of the vessels in the conjunctiva of the eye.
• Relaxation of the muscles.
• A dry mouth.

These effects are temporary and mostly disappear after a couple of hours.