Sunday, celebrate the Lord’s Day. Every Sunday your fraternity is permitted to relax one discipline together to remind you of the glory of God and of heaven. All Solemnities are celebrated with the same principle. (Suggestion: allow one dessert. It is strongly recommended that you do not relax technology-related disciplines.) Choose the discipline you relax as a fraternity so as to preserve fraternal unity and accountability.
Be prudent on this. For example, if someone in the fraternity struggles with a dependency on alcohol, avoid choosing alcohol as a fraternity and instead choose a warm shower. Note that there should also still be moderation. Showers shouldn't be long just because you have the discipline relaxed. Dessert shouldn't be consumed at every meal if you choose dessert. Decide as a fraternity and hold each other accountable.
Holy Leisure on Sundays and Solemnities
Rest is a great thing to do on Sundays and solemnities. However, being slothful is not a healthy means of resting. Holy leisure is almost always active, not passive. Watching movies on a couch is passive and not often an expression of holy leisure. Contrarily, going on a hike is engages the mind and body. It is almost always an expression of holy leisure. Much falls in between. Playing catch with your buddies, board games with your wife, or exploring the nearby forest or park with your children are all great expressions of holy leisure.
Though these forms of activities take more energy than watching a game or another TV series, when done right, they actually rejuvenate you for the next week far more than simply sitting on the couch. They give you memories filled with awe, and a new gratitude for life to carry with you into the new week. Glorify the Lord with your time on Sundays and solemnities. Get up and give yourself to God through your time with him, your friends, or your family. Sunday is the Lord's day. Now you are ready to live it accordingly.
What about other feast days?
All the different feasts days fall somewhere on a hierarchical spectrum. This spectrum or gradation of feast days is known as graduated solemnity. The Church holds solemnities above all other feast days and even grants special rights on solemnities. For example, see this excerpt from the Code of Canon Law:
"Abstinence from meat, or from some other food as determined by the Episcopal Conference, is to be observed on all Fridays, unless a solemnity should fall on a Friday ... " - Code of Canon Law #1251
For this reason, you should relax one discipline on solemnities, but not on other feast days.
Why can't we take a break from everything? The simple answer ... because we are human. As much as we are a people living post Christ's resurrection, we are still a people longing for heaven. We are still a pilgrim people. We are still Exodus Men.
Just as religious brothers, sisters, and priests don't ditch their habit and jump into civilian clothes each Sunday or solemnity, neither do we ditch all aspects of a disciplined life.
In these 90 days your brain is being rewired. Science shows us that you can break old neural pathways that lead to bad habits, and form new ones in time. How long though? Research on rehab centers reveal that it isn't until 90 days of time free from a habit that one can expect to see results that last. And even then, the researchers push for longer periods of time when possible. If we take a break from our detachment each Sunday, it will be far less likely that at the end of these 90 days, we will really be free men.
Have one thing back on Sunday and solemnities. Choose it prudently as a fraternity. And honor the Lord with all your mind and heart in doing so.