Praying in the Spirit - that is praying in tongues - is like unto a complete battery recharge from flat to full.
I start the day off with half-hour of praying in the Spirit - my spiritual breakfast.
1Corinthians 14:14 For if I pray in an unknown tongue, my spirit prays, but my understanding is unfruitful.
1Co 14:15 What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit,
and I will sing with the understanding also. [A sister in the Lord, Rachel, often sings in tongues while she does her housework]