Meditation is the best way of connecting with the Universal Self, beyond thought. Often, especially with busy modern lifestyles, the subtle energies in the body are not in balance, which disturbs the attention and makes it difficult to go into a state of thoughtless awareness. One method to balance the energies of the subtle body, as an adjunct to meditation, is to use water as a treatment. Foot-soaking is a simple and relaxing technique taught by Shri Mataji Nirmala Devi, the founder of Sahaja Yoga. It is used to cool down the fiery sun channel on the right side of the subtle body, to bring it into balance. For an even more cooling effect, a bag of ice can be held on the right side of the body over the liver.
When I was a child, if I was feeling unwell, my own mother used to fill a basin of water with salt in for me to put my feet in. This seems to be a traditional treatment that has been forgotten about.
You can footsoak at the sea, as the water is salty. The salt acts to absorb the negative energy and toxins from the body. The soles of the feet seem to have larger sweat pores that can exude the toxins more readily.