While trekking is an extremely rewarding experience, there is a risk of injury involved. Because it involves following a route, or sometimes even making your own path, there can be small roots, or even protruding branches that can scratch your skin. Another possibility is insect bites: if you react badly to such bites, make sure to take bug spray and an antiseptic cream with you when you hike. You can also never be too careful by taking basic medication such as aspirin. For those who do not like the glare, and especially if you are thinking of trekking across a terrain that has little shade, consider taking a pair of sunglasses.