If it is meditation that you want then meditate on the Lord Jesus Christ and His Word, not with an empty mind. There is nothing worse than being empty headed for a Christian.
If it is the physical aspect, the relaxation exercises, that you want there are many such great exercises without having to get into the mysticism of yoga.
Amen!
I'm partial to the strawberry and bannana flavors though

Just kidding!
Grace and Peace!