Aromatherapists often insist essential oils can help with digestion, allergies, skin conditions, and even weight loss. There's no legit scientific evidence to support these claims. But smelling lavender is pretty relaxing, and eucalyptus could help you breathe a little better for a couple minutes, so there's that.
Personal trainers only certified by their gyms
To the untrained eye, deciphering personal-training certifications is like evaluating an alphabet soup of random letters, and it seems like anyone can just plop whatever acronyms they earned from a weekend workshop after their name. But there are four main high-level national certifications for personal trainers: NASM, ACSM, NSCA, and ACE, all of which require lots of studying, taking an exam, and being re-certified regularly.
But some trainers or fitness instructors are only trained to do so through the gyms where they work, which should be a major red flag. Make sure your trainer is certified from one of the main national boards. Taking the occasional spinning class from someone who's only trained at the studio is fine, but your go-to fitness pros shouldn't be people who have been certified at the very places that are encouraging them to sell their services.