Humans can survive for weeks without solid food, but just a few days with no fluid intake. Our organic functions would simply not work without water. Drinking regularly and sufficiently keeps us healthy.
The broadcast times are determined using the time setting of your computer, and refer to the applicable time zone of your region. This is where you change the automatically set time zone. Please note that these are standard UTC time zones, i.e. with no adjustments for summer time.
Modern medicine has very effective drugs, high precision surgery and computer-controlled diagnostics. But simple remedies can help tackle many health issues: tea or certain foods, stress relief techniques, or just going for a walk.