1. Open the Phone or Contacts app: 2. Select a contact, then tap the Share Contact button toward the bottom of the screen: 3. Select Mail or Message (text message): 4. Choose your recipient(s), then tap Send: 5. When your recipient receives the vCard, it will look something like this: Now all the recipient has to do, if on an iPhone, is tap the card to add all the contactâs details to their iPhone as well.
A typical person will lose minimally two to maximally four liters of water per day under ordinary conditions, and more in hot, dry, or cold weather. Four to six liters of water or other liquids are generally required each day in the wilderness to avoid dehydration and to keep the body functioning properly.
The basic equation for determining this is by dividing your body weight in half. So, if you weigh 200 pounds, you would need 100 ounces of water per day if you're not doing anything strenuous. If you're working out, hiking, at a high altitude or outdoors a great deal, you're going to need to add to those 100 ounces. [Read: Tips on Hydration from Sports Dietitians.]. Why Dehydration Is Dangerous.