Spend Some Time in the Sun.
People often forget about sun protection, even though it is a crucial aspect of maintaining healthy overall. You should still put on sunscreen and, if feasible, a hat with a wide brim to protect your skin and the rest of your body from the potentially damaging effects of the sun, even if the sky is overcast.
This cretin appeared to be under the impression that as long as you keep moving forward, the sun cannot possibly catch up to you. Not how the light and heat from the sun behave in their interactions. Applying sunscreen right away is a must if you care about how you look and want to avoid becoming a complete idiot.