Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Arm day can be one of ...

Cable machines are one of the best and most versatile pieces of equipment in any gym. With a simple adjustment in pulley height, handle attachment, or weight, you can train multiple movement patterns ...

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A tricep dip performed on a workout bench or elevated surface is an excellent entry-level exercise that lays the foundation for more advanced movements, like tricep dips on a dip bar. It's a simple ...