Please choose the correct ending to complete the given sentence: Health: [header] How to use candles for meditation [title] Select a non-toxic candle. [step] Many candles are made from toxic chemicals, such as paraffin. These release harmful vapours while the candle is lit and should not be used for candle meditation.

Ending1: [substeps] Manufacturers should not use candles containing zehr, wicks, or other chemicals, as these can cause greater distress if ingested. Superflammable candles have long been prevalent. Ending2: If you choose a non-toxic candle, you'll have the best results in practice, especially for a practice you can comfortably perform in front of others. [substeps] If you choose a non-toxic candle or candle holder, be careful of placing it upright on your desk. Ending3: [title] Take a look at the candle wax for specific and long-lasting candles. [step] The candle wax is rich enough to build up with every move of the flame and last a lifetime. Ending4: Instead, select a candle made from a non-toxic or natural substance, such as beeswax or soy wax. [title] Choose a white, blue, or purple candle for spirituality.

Answer format: ending1/ending2/ending3/ending4