TikTok challenge

Bicep Heart Challenge

The bicep heart challenge is simple: flex, put your hand on your bicep, make a heart, tag someone. Here are the rules, ideas for who to tag, captions and hashtags, and a way to join without filming at all.

  • 7 seconds
  • Tag a friend
  • Film it or use AI

Make your bicep heart

7s · 720p

Your 7-second video comes with the trend sound and caption already on it.

The sound is for personal posts; you can swap it on TikTok. Not happy with a finished video? Email us within 7 days. Refunds · How we handle your photo

From $9.99 a video. You sign in first; your photo stays selected.

What is the bicep heart challenge?

The bicep heart challenge is the TikTok trend of filming yourself doing the bicep heart pose (one arm flexed, the other hand curled on the bicep to form a heart), usually with the caption "have you ever heard of a bicep heart...", and then challenging friends, partners or gym buddies to post theirs.

The rules

How the bicep heart challenge works

  1. 1

    Film a short vertical clip, waist up: a small smile at the camera to start.

  2. 2

    Flex one arm, fist near your ear, at about the 2-second mark.

  3. 3

    Curl your other hand onto the bicep so the two make a heart, and hold it to the end.

  4. 4

    Post it with the caption and hashtags, and tag the people you challenge to do theirs.

Two ways in

Film it, or make it from one photo

Film it yourself

Prop your phone up, practise the pose a few times (see the bicep heart pose guide) and record with the trend sound from TikTok.

Make it with AI

Camera-shy, or no time? Upload one waist-up photo above. In about 5 to 7 minutes you get the 7-second video with the sound and caption, ready to post.

Made here

Bicep heart trend examples

Each clip was made on this site from the one photo under it. Tap for sound. The people are AI-generated.

Bedroom selfie, green tee1 photo in · 7 s out

Gym mirror energy, black tank1 photo in · 7 s out

Park selfie, white tee1 photo in · 7 s out

Kitchen dad, navy tee1 photo in · 7 s out

Who to tag

Bicep heart challenge ideas

Your partner or crush

The obvious one. Post yours, tag them, and wait for theirs.

The gym group

Challenge your training partners. Bonus points for doing it mid-session.

Friends who never post

Send them this page: they can join with one photo and no filming.

Mum, dad, grandparents

Family versions get some of the biggest reactions. Ask first, and make it together.

Coworkers

A team bicep heart wall: everyone makes one, you post them together.

Long-distance friends

Make one each from a photo and post them side by side.

Post it

Captions and hashtags for the challenge

Captions

"have you ever heard of a bicep heart..." · "bicep heart challenge accepted" · "your turn @friend" · "a bicep heart for you"

Hashtags

#bicepheart #bicepheartchallenge #bicephearttrend #flex #fyp. If you made it with AI, turn on TikTok's "AI-generated content" label.

Keep it kind

Only post adults who have agreed to it, never make one of anyone under 18, and do not use it to mock anyone.

FAQ

Bicep heart challenge FAQ

What is the bicep heart challenge?

A TikTok trend where you film yourself flexing one arm and curling the other hand onto the bicep to make a heart, then tag friends to do the same.

How do I do the bicep heart challenge?

Film a 7-second vertical clip: smile, flex at about 2 seconds, land the hand-on-bicep heart at about 4 seconds and hold it. Or upload one photo above and let the AI make the clip.

Who should I tag?

Anyone you would send a heart to: a partner, a crush, best friends, your gym group or your family.

Can I join the challenge without filming?

Yes. Upload one waist-up photo at the top of this page and the AI makes your bicep heart video, with the sound and caption.

How much does an AI bicep heart video cost?

One video is $9.99, and packs bring it down to $5.33 a video. It is a one-time payment, and a failed render is returned to your balance.

Keep reading

More on the bicep heart

Challenge accepted?

Make yours from one photo, then tag the people you challenge.

Make my bicep heart video