Hello there LT,
While the Sabbath is not required for Christians to keep in the Dispensation of Grace, the principle of the Sabbath is still important and beneficial.
That is it will benefit us to take a day to just rest from our Labours. Because if we don't, we'll eventually burn out. And that's true for anybody. Working 24 hours, 7 days a week, with no time of rest would obviously be detrimental to one's health and well-being, especially in the long run.
Having said that; again, keep in mind that the Sabbath is not required as Law for Christians. The Sabbath is a Sign for Israel.
The Jews require a Sign (1 Cor. 1:22):
Ezekiel 20:11-20 KJV
And I gave them my statutes, and shewed them my judgments, which if a man do, he shall even live in them. [12] Moreover also I gave them my sabbaths, to be a sign between me and them, that they might know that I am the Lord that sanctify them. [13] But the house of Israel rebelled against me in the wilderness: they walked not in my statutes, and they despised my judgments, which if a man do, he shall even live in them; and my sabbaths they greatly polluted: then I said, I would pour out my fury upon them in the wilderness, to consume them. [14] But I wrought for my name's sake, that it should not be polluted before the heathen, in whose sight I brought them out. [15] Yet also I lifted up my hand unto them in the wilderness, that I would not bring them into the land which I had given them , flowing with milk and honey, which is the glory of all lands; [16] Because they despised my judgments, and walked not in my statutes, but polluted my sabbaths: for their heart went after their idols. [17] Nevertheless mine eye spared them from destroying them, neither did I make an end of them in the wilderness. [18] But I said unto their children in the wilderness, Walk ye not in the statutes of your fathers, neither observe their judgments, nor defile yourselves with their idols: [19] I am the Lord your God; walk in my statutes, and keep my judgments, and do them; [20] And hallow my sabbaths; and they shall be a sign between me and you, that ye may know that I am the Lord your God.