However, it’s important to remember that SAD can affect people in different ways at different times of year, it’s very individual.” “Therefore, people often feel exhausted in the summer because they are hot, overrun and overcommitted when their activities outweigh their resources.” Sleep disruption(Alamy Stock Photo)Heat can also wreak havoc on our sleep during the summer months, which can have knock-on effects on our mood. Here are some seven tips on how to manage these feelings during the summer period…1. Pace yourself“If you’re feeling low or exhausted, try to pace yourself this summer,” recommends Pilkington.