Waking Up. 1  1. Do not press the snooze button. Wake up as soon as your alarm goes off. 2  2. Seek light immediately. Human brains are wired to respond to light as a cue to awaken from sleep. 3  3. Have a moderate amount of coffee. Caffeine is a powerful stimulant.
Grapefruit is an excellent source of vitamin C, a vitamin that helps to support the immune system. Vitamin C-rich foods like grapefruit may help reduce cold symptoms or severity of cold symptoms; over 20 scientific studies have suggested that vitamin C is a cold-fighter.
Photo Credit anandaBGD/iStock/Getty Images. 1  Ruby red grapefruit is higher in some nutrients than white grapefruit, making it the better choice for grapefruit lovers. 2  Half of a ruby red grapefruit provides 64 percent of the daily value for vitamin C, 28 percent of the DV for vitamin A and 8 percent of the DV for fiber.