If you like quiet time surrounded by flowers and greenery, hang out at Yufucun Forest Park in Youxian District. Want to stretch your legs some more? Head to Mianyang People's Park, located nearby.
If museums are on your list, you might want to check out the upcoming exhibitions at China Academy of Engineering Physics in Youxian District. If you want to see more of the museums in Mianyang, Mianyang Museum isn't far either.