Pain has a way of making something memorable. Try this for yourself. Find any scar on your body and think where it came from. In most, if not all, cases you can remember the details of the event.
Ignoring God’s command to rest will guarantee you a short, unhappy life. Let’s take care of our bodies for the sake of God’s Kingdom. Take care of your body. Get at least 8 hours of good quality sleep per night. Take a day per week to do NOTHING. Just rest. Get your rhythms in place. Eat healthy. Exercise. Take care of your body and your body will take care of you.
Working out of your flesh will kill you. God wants you to be effective. But, to be effective you need two things 1) God's Grace and 2) a winning mindset.
If you are not living in tension you are not growing. This might be a comment you wish to challenge, but give me some time to explain. Growth has to do with improving and developing yourself. Unless you plan this growth, you will never understand the benefit of living in tension.
Whenever a product is not used for it's originally intended purpose, you will end up abusing and destroying the product. Substituting a shoe as a hammer might be a normal occurrence for some diy-disabled ladies, but the original purpose of the shoe got altered and will eventually break. You need to use the product for the reason it was primarily intended or you will destroy it.