The feature image of Julia Foery and all of the photographs in this NSFW Sunday are from fetish site Mondo Fetiche. The inclusion of a visual here is not an assertion of a model’s gender or orientation.

Welcome to NSFW Sunday!

Elise Graves and Margot Rose for Mondo Fetiche

Why do your toes curl during a really great orgasm? The answer has to do with hormones, nerve endings, and muscle spasms:

“‘The body responds to pleasure by tensing up,’ explains Victoria Glass, a doctor with the Farr Institute specializing in gynecology. ‘Your muscles tighten as the orgasm peaks and begin to relax as the orgasm dies down. An orgasm is followed by a sudden rush of dopamine (i.e., the feel-good hormone) and oxytocin (i.e., the wanna-cuddle hormone). This, in combination with the fact that muscles are relaxing after building tension, makes other parts of your body spasm.’

In short, the brain, nervous system and spinal cord decide to respond to all this stimulation by flooding us with hormones, tensing the body up and releasing every bit of that tension and sensation via orgasm. That’s quite literally the purpose of an orgasm — to give our nerves a break from the overwhelming amount of pleasure they’re experiencing. And while it’s nerve endings in the genitals that might be the focus, the brain and nervous system can’t entirely distinguish that from the rest of the body during an orgasm. And so, for many people, even their toes are getting in on the action. As for the ‘curling’ motion itself, it’s really just the toes tensing up along with every other part of the body.”

Mona Wales and Kaya Lin for Mondo Fetiche

Pay attention to green flags in a new potential relationship, not just red ones. After you know what you want out of a relationship, pay attention to indicators that you want to keep getting to know a person:

“‘Your ‘no’ is no—no explanation needed, no further negotiation.’ For a low-stakes example to illustrate this point, let’s say that the person you’re dating asks you to hang out after a long day of work, but you’d rather use that time to recharge solo.

If the person is understanding of your tiredness and simply says, ‘okay, we can hang out another time,’ that’s a green flag that they’re honoring your no. If there’s some negotiation or pushiness (like, ‘It’ll only be for a bit.’ or ‘Are you really that tired?’), that might not be someone who’s likely to honor your wants and needs down the line.”

Elise Graves and Margot Rose for Mondo Fetiche

Here’s how to explore your bisexuality without being overwhelmed.

Here are a few signs of verbal abuse.

“Like the collision of two black holes in space,” two bottoms can make a relationship work.

Horniness might be hereditary.

Amazon Maddox and Francisco St. Laurent for Mondo Fetiche

Here’s how to actually move on from a breakup:

“[I]t makes sense to approach the end of a relationship with all the mourning and grief it deserves. ‘The process of dealing with a breakup is comparable to grief,’ clinical psychologist Dr. Tricia Wolanin tells NBC News, in that you are essentially losing a person who was a major part of your life. Like any other death, you need time and space to fully process the death of a relationship.”

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