To be clear, meditating is part of prayer for Catholics…
From the Rosary…
Let us pray. O God, Whose Only-Begotten Son, by His life, death and resurrection, has purchased for us the rewards of eternal life: grant, we beseech Thee, that by meditating upon these mysteries of the most holy Rosary of the Blessed Virgin Mary, we may imitate what they contain, and obtain what they promise, through the same Christ our Lord. Amen.
If you are meditating as part of a New Age religion, Buddhism or some other form of religion, then, no a Catholic wouldn’t do that…
As far as meditating without intent to pray… to center and clear one’s mind, then I think the health benefits of that are pretty well documented as being positive.