Hi K9keystrokes! Thank you for your question. The answer really depends on which point you are referring to. For example, if a pregnant person doesn't mention to her teacher that she is pregnant (and isn't obviously showing), the pregnant student might find herself in a class of deep twists, which are generally thought to be unsafe for pregnant women. On the other hand, having someone next to you with too much perfume on might make your session "unsuccessful" because the strong scent could be a distraction. I hope that helps! Thanks for your interest!