pump
/pʌmp/
CommonThe temporary swelling of muscles during a workout from increased blood flow.
Can be used sincerely by gym people or as a joke about the fleeting vanity of looking good only mid-workout.
Real-world examples4 examples
| # | Example | What it means | Source |
|---|---|---|---|
| 01 | arms looked incredible mid-workout, the pump was insane today | Muscles were visibly swollen from a strong training session. | instagram, 2024 |
| 02 | did a whole arm session just for the pump before the beach | Trained for temporary swelling to look better, not for long-term gains. | reddit, 2023 |
| 03 | nothing hits like that post-workout pump, best feeling in the world | The swelling sensation after training is intensely satisfying. | x, 2024 |
| 04 | tried to take a mirror selfie right after a set, classic pump behavior | Taking advantage of temporary muscle swelling for a photo. | tiktok, 2023 |
Use it when
- Describing the temporary muscle swelling during or after a workout.
- Expressing satisfaction about how you look mid-workout.
- Chasing or celebrating the feeling of a good training session.
Do not use it when
- You mean actual muscle growth.Use “gains” instead.
- You mean being hyped or excited.Use “hyped” instead.
Pump vs gains
pump
Pump is temporary swelling from a workout, gone within an hour.
VS
gains
Gains are permanent muscle tissue built over weeks and months.
Origin and context
Gym term for muscle vasodilation during training. Popularized in bodybuilding culture and famously described by Arnold Schwarzenegger in the 1977 documentary Pumping Iron.
- First seen
- 1970s
- Confidence
- high
Cite this page
Use this stable URL to reference the entry.
https://slang.fyi/pumpUpdated: 2026-08-28License: CC BY 4.0