You only need two dumbbells and these three exercises to build bigger arms

Women doing shoulder press .

While we can’t guarantee this workout is going to leave you with arms like Chris Hemsworth, what we can tell you is that you’ll be left with a serious pump afterwards. Better still, it’ll only take you seven minutes. It’s perfect for those days when you can’t fit in a full-blown upper body workout, or if you’re looking for some accessories to add onto the end of your compound exercises. All you need is a pair of dumbbells, an exercise matt and to have your timer at the ready.

This workout is a tri-set, where you perform three exercises back to back. Not only do they allow you to fit in multiple exercises in a short time frame, but they're great for building muscle too. According to Built For Athletes: "They generally increase time under tension, a critical factor in generating muscle growth. They are also an effective way to fully exhaust a muscle, which increases the amount of muscle damage a workout produces and influences the metabolic response our body has to exercise."