Flinch at the First Offer
Flinching is a natural reflex we all have when something seems dangerous or unfair. In negotiations, you can use this to your advantage by flinching when you receive a bad offer.
The other person will often interpret your flinch as a sign of displeasure and will try to improve the offer to make you feel more comfortable. It's a simple, non-verbal way to negotiate without directly saying that you're unhappy with the terms.
