Do you not know that your body is the temple (the very sanctuary) of the Holy Spirit Who lives within you, Whom you have received [as a Gift] from God? You are not your own, You were bought with a price [purchased with a preciousness and paid for, made His own]. So then, honor God and bring glory to Him in your body. - 1 Corinthians 6:19-20
The word stress was originally an engineering term used to refer to the amount of force a beam or other physical support could bear without collapsing under strain.
In our time, the word has been expanded to refer not only to physical pressure but also to mental and emotional tension. As human beings, you and I are built to handle a normal amount of stress. God has created us to withstand a certain amount of pressure and tension. The problem comes when we push ourselves beyond our limitations, beyond what we were intended to bear without permanent damage. But like so many people, because I have things to do, I just keep pushing myself even though it is causing me physical damage.
Of course, when sickness tries to come on Dave or me, we immediately pray for healing. But if you become sick as a result of running your body down by pushing it beyond the limits God set for you to operate in good health, you need rest as well as prayer to restore your health. The boundaries He has set for us are for our own good.