Good morning on this boiling Monday.

“Hot town, summer in the city — back of my neck getting dirty and gritty…”

That about sums it up.

Following weekend highs near 100, an excessive heat watch remains in effect until tonight, with sunshine and a high around 94 today.

Braving the heat in the city can feel like an achievement. Subway riders board trains freshly showered then exit feeling defeated, with swampy pants, matted hair and sweat marks on newly laundered shirts.

But it’s not always bad to sweat.

“You want to sweat because it helps to regulate body temperature and also helps to get toxins out,” said Dr. Debra Wattenberg, an associate clinical professor of dermatology at Mount Sinai Hospital and a member of the American Academy of Dermatology.