Got into a discussion with some friends the other day regarding diet and exercise and losing weight, etc. One of my friends said that exercise does not help you lose weight, it's 100% diet. I disagreed and said that whether you take in less calories (diet) or burn more calories (exercise), if you're in a deficit you'll lose weight, therefore exercise does in fact help you lose weight. She disagreed with me still.
I didn't find the right solution from the Internet.