How do you make sure they exercise enough?

[Millieex]

How do you make sure they get enough exercise?
I put them in an enclosure on the grass but all they do is eat. How do you encourage them to exercise? What types of exercise can they do?

Thanks xx

[Keekers]

You let them have at least an hour of floortime. It has to be larger than their cage that they're living in so they can have more room to exercise. You can put a towel down underneath the pigs when they're outside, so they'll exercise instead of eat.