But he that is joined unto the Lord is one spirit. (1Corinthians 6:17)
When you get born again, your spirit is joined to Christ.
Mark Hankins
When you pray in the Spirit, or you get where the Spirit of God is moving, you want to jump, run, laugh, and do all kinds of things because your spirit is joined to the triumph of Christ. Sometimes your head cannot figure out why you are jumping and running, but you get so full of the Holy Spirit that you see who you are in Christ.
The actual experience begins to work out from your spirit, and you start laughing. You are blessing Him. You are redeemed in Him. You are righteous in Him. You are forgiven in Him. You are triumphant in Him. You are strong in Him. You are prosperous in Him.
Your spirit rises up and begins to take ascendancy over your mind, your reasoning, and your flesh. Your spirit starts acting like who you really are. This is what happens in a Holy Spirit meeting. The Holy Spirit begins to infuse strength into your spirit, which is your inner man. The Holy Spirit brings out the reality of redemption.
Confession: Therefore if any man be in Christ, he is a new creature: old things are passed away; behold all things are become new.
(2 Corinthians 5:17)