How to bulk up fast for skinny guys?

Right then, bulking up is simpler than you think. First, you must eat more. A lot more. Aim for a calorie surplus every single day, focusing on good stuff: chicken, rice, oats, and nuts. Plenty of protein is absolutely key for building muscle.

In the gym, forget endless curls. Concentrate on big, compound lifts like squats, deadlifts, and bench presses. Lift heavy and aim to get stronger each week. This is called progressive overload. Finally, don't skimp on sleep. Your muscles grow when you're resting, not training. Stay consistent and be patient, mate.