Waxing Moon
The waxing phase of the Moon is the best time to build the body up.
This is when you can use nurturing herbs and tonics to strengthen the body's natural immunities.

Raspberry leaf is an excellent tonic for female reproductive organs
hawthorn berries are good for the cardiovascular system 
nettle is a great blood tonic 
marshmallow root is a soothing tonic for the urinary tract
astragalas is a wonderful immune system tonic
burdock is a good liver tonic 
red clover builds fertility 
oat straw is good for the nervous system
alfalfa is a fantastic all-around nutritive tonic

These herbs are simple and gentle. They are best taken in a cup of tea, three to five times a day. During the waxing phase I also like to increase water intake to avoid water retention. The more water we ingest, the less water our bodies attempt to retain. This is also a good time to apply medicinal salves and to take therapeutic baths.

Most importantly, I work during the waxing Moon to ensure that the body has all the nutritional support it needs. This is the body's building time, and it needs a good supply of minerals, vitamins, carbohydrates, lipids, and amino acids to be healthy.

I would also not attempt to fast or to lose weight during the waxing Moon.
Use energy healing techniques to strengthen and reconnect with the earth.
Be careful to ground and center when healing so that you never use up your own life force energy. The universe is full of energy to use, and by tapping into it you will be able to help many more people than you could by using just your energy alone.