If a martial artist stops training for a long time, would all their skills go away?

Q: If a martial artist stops training for a long time, would all their skills go away?

A: No, especially in a tense situation muscle memory tends to kick in.

I practiced on my own but didn't spar with anyone for about 10 years.

3 People attempted mug me I gave him my wallet and I intentionally do not carry cash.

They threatened me when I didn't have a choice I used blocks and simple strikes disabled all tree I about 10 seconds. I left and no further issues.