Yoga a sin?

I don't understand how something so beautiful can be considered sinful. I truly do not understand this. I LOVE crystals, yoga, everything helping me connect with my inner light and spirit guides, but I also LOVE God. I am having an internal struggle, truly because I believe in other energies. I cannot understand or fathom how there is one omnipresent being that is judging my yoga poses. I realize what the bible says about worshipping other gods and how yoga is doing just that, so it is a sin. But why? I pray every day and every night to God and thank him for saving me through such a hard time. Why can't we believe in more the one entity, or energy without it being sinful? Regardless of what the bible says, I just can't help but feel like people make believing in the catholic God similar to that of a dictator or king. It's just, not what I want to feel from my beliefs. Idk.