Dr. Al Mohler provides an insightful and biblical response to the continuing and growing trend of such Eastern practices HERE.
Some helpful comments:
Psalm 1:1-2 "Blessed is the man who walks not in the counsel of the wicked, nor stands in the way of sinners, nor sits in the seat of scoffers but his delight is in the law of the LORD, and on his law he meditates day and night."
Psalm 77:6 "I said, 'Let me remember my song in the night; let me meditate in my heart.' Then my spirit made a diligent search:"
Psalm 119:15-16 "I will meditate on your precepts and fix my eyes on your ways. I will delight in your statutes; I will not forget your word."
Psalm 145:5 "On the glorious splendor of your majesty, and on your wondrous works, I will meditate."