Peanut butter is one of the world’s most popular foods, creamy, filling, and naturally rich in nutrients. Whether spread on toast, blended into a smoothie, or eaten straight from the jar, it’s a ...

People with fast metabolism often struggle with bulking up and gaining muscle mass. It often seem that the answer to 'how to gain weight and bulk up' naturally is not as easy as 'just eat more'.

If you want to gain weight quickly, eat an additional 500 calories a day. If you have a fast metabolism, you might need to eat even more calories to gain weight. Once you're gaining weight, begin ...