Muscles contain glycogen, Wikipedia tells me [0], at a concentration of 1-2% by mass.
That shouldn't really be dietarily relevant, but you did say zero carbs.
[0]: https://en.wikipedia.org/wiki/Glycogen
https://www.reddit.com/r/nutrition/comments/354ho4/if_glycog...
Muscles contain glycogen, Wikipedia tells me [0], at a concentration of 1-2% by mass.
That shouldn't really be dietarily relevant, but you did say zero carbs.
[0]: https://en.wikipedia.org/wiki/Glycogen