For anyone receiving chemotherapy or not!!

See remarkable article below posted by Dr. Weil

Forest therapy can also lower blood pressure and heart rate and trigger a dramatic increase in the activity of natural killer (NK) cells produced by the immune system to ward off infection and fight cancer. Japanese researchers have reported that spending three days in the forest increases NK activity by 50 percent, a beneficial effect that can last up to one month.

Take this book with you as well, available in many languagues and can be ordered from Breslev in Israel.  

In forest fields | Rabbi Shalom Arush       https://www.amazon.com/Forest-Fields-Unique-Personal-Prayer/dp/965913424X