Unfortunately, my friend and I are not morning people, so by the time we hit the trail (Post lattes and a blueberry scone, of course!) it was already 10:30. However, after 3 hours of hiking, I think I've come away with only a slight sunburn at my hairline, so not too bad. I definitely feel drained after spending that much time in the sun, and have a mild headache despite drinking TONS of water and powerade. During summers in high school, I used to lifeguard at the local swimming pool, and it always took a few weeks to adjust to that much sun exposure.