The lymph is moved through the body in its own vessels making a one-way journey from the interstitial spaces to the subclavian veins at the base of the neck. Since the lymphatic system does not have a heart to pump it, its upward movement depends on the motions of the muscle and joint pumps.
Answer:
The moon, sun, river, clouds, mountain, rain, water and so on.
Because with out energy we wouldn't be moving and we would always be sleeping.
