I’ve been doing a lot of celery and carrot sticks. Hadn’t thought of unsalted popcorn!!! good idea!
I believe each of those require more calories to digest than they give or pretty close to net zero gain.
Had a friend, marathon runner, who could not lose the last 10 pounds he wanted prior to a race.
I gave him an enhancement to his diet plan and he reached his goal in 2-3 weeks. He was happy and amazed.