# HIIT with treadmill/elliptical?
**URL:** https://forum.barbellmedicine.com/t/hiit-with-treadmill-elliptical/5701
**Category:** Training Q&A \[Moderated\]
**Created:** [May 9, 2019, 4:14am UTC](https://forum.barbellmedicine.com/t/hiit-with-treadmill-elliptical/5701 "2019-05-09T04:14:51Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Howie\_Jack](https://forum.barbellmedicine.com/u/Howie_Jack)
#### Post date: [May 9, 2019, 4:14am UTC](https://forum.barbellmedicine.com/t/hiit-with-treadmill-elliptical/5701/1 "2019-05-09T04:14:51Z")
I’m coming up on week 5 of Bridge 1.0 but my gym only has elliptical machines and treadmills. I’ve been doing LISS on the treadmill, but I get the sense that HIIT on a treadmill isn’t very commonly done. Is it ok to do treadmill sprints, and if not, why? And what are some possible alternatives?
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### Author:  [@Jordan\_Feigenbaum](https://forum.barbellmedicine.com/u/Jordan_Feigenbaum)
#### Post date: [May 9, 2019, 3:54pm UTC](https://forum.barbellmedicine.com/t/hiit-with-treadmill-elliptical/5701/2 "2019-05-09T15:54:05Z")
It’s fine if you can sprint on the treadmill, but many treadmills won’t go fast enough if you can sprint well. That being said, we’d recommend a gradual introduction to sprinting over a series of weeks , as most people are not well-prepared for sprinting. Here’s an example:
Week 1: sprints @ 70% max effort
Week 2: sprints @ 80% max effort
Week 3: sprints @ 80% max effort
Week 4: sprints @ 90% max effort
Week 5: sprints @ 90% max effort
Week 6: HIIT as rx’d