2185 On Sundays and other holy days of obligation, the faithful are to refrain from engaging in work or activities that hinder the worship owed to God, the joy proper to the Lord’s Day, the performance of the works of mercy, and the appropriate relaxation of mind and body.123 Family needs or important social service can legitimately excuse from the obligation of Sunday rest. The faithful should see to it that legitimate excuses do not lead to habits prejudicial to religion, family life, and health.
You know, for a religion that gets a lot of flak from critics about it demanding the faithful to be mindless followers of the Pope, there sure are a lot of sections in the Catechism that allow each believer to be faithful to teachings, while keeping their own individuality.
For example, yardwork. I personally don’t find it to be “work” at all. For me, it is a wonderful meditative practice to be outside in God’s creation, tending to my small patch of it. I view weeding as a spiritual exercise- while pulling out physical weeds, I’m contemplating spiritual and moral weeds that need to be yanked from the soil of my soul.
On the other hand, I do not find it acceptable for my children to be involved in sporting events on Sunday. Do other faithful families find no problem with this? Absolutely. And that’s what’s so amazing about our Faith. It clearly lays out what it means to be in obedience, yet leaves room for individual expression of that obedience.
So while it can be annoying to not have a clear cut answer on what one can and can’t engage in on Sunday, it is so much more spiritually beneficial to have it this way. Now, you are expected to really know your faith, and to honestly find how to apply it to your life.