Yoga is a personal journey to find God. Others can give you advice. It is not to do with worshiping a guru or swami or following a pack in an ashram.
Here are some things that happen if you do yoga without listening to God: • Yoga exercises destroy your sex drive
• Yogic breathing techniques destroy your ability to think
• Yogic meditation makes you dull and eventually you become mad.
The health benefits of doing yoga (which I also discuss) are offset in later life by a deterioration. The true purpose of doing yoga is to awaken your Kundalini energy. It is for this reason that everyone should practice yoga.