The effect on different systems:

Cells & Tissue

• increased blood supply causes more rapid cell renewal
• helps rid tissues of waste, enabling better function

Vascular

• increases the blood circulation
• helps to heat up cold extremities
• generally increases the heart’s function 

• increases flow of lymph
• ensures glands and vessels keep fluid moving through them
• detoxifies

• induces deeper breathing

• increases peristalsis

• helps to prevent constipation

• increase production of urine

• speeds up circulation of hormones

Autonomic nervous system is affected, due to relaxation