Make that soak in the tub even more beneficial by adding a few essential oils to fit your needs.
To energize: two or three drops of peppermint.
To take away stress: two or three drops of lavender mixed with a couple drops of lemon.
For PMS relief: two or three drops of geranium mixed with half a cup of very strong chamomile tea.
To boost circulation: add a cup of cranberry juice to your bath.