Why is a plate at the gym 45 lbs and not 50 lbs

When lifting at the gym, you may have noticed that the plates used to increase weight on barbells and machines are typically in increments of 45 lbs. This may seem counterintuitive, as it would be more convenient to have a plate that weighs a round number like 50 lbs. However, there are several reasons why 45 lbs is the standard weight for gym plates.

Historical Precedence: The 45-lb standard was established in the early days of weightlifting, when athletes used cannonballs as weights. Cannonballs were standardized at 42 lbs, and adding three pounds of metal to each side of the handle brought the total weight to 45 lbs.

Ease of Calculation: Dividing weightlifting exercises into 45-lb sets and reps is easier to calculate and track progress. Whether you are adding or subtracting weight, the 45-lb increment is a manageable amount for most lifters and allows for gradual progression.

Weight Balance: When using a barbell, it is important to have an equal amount of weight on both sides to maintain balance and prevent injury. The 45-lb increment allows for symmetrical loading, ensuring that the weight is distributed evenly across the bar.

Convenience: Plates weighing 45 lbs are relatively easy to handle and store. They are not too heavy to lift, yet they provide a significant amount of weight for exercises such as squats, deadlifts, and bench press.

Who Sets the Standard? The 45-lb plate standard is set by the International Weightlifting Federation (IWF), which governs weightlifting competitions. The IWF has adopted the 45-lb standard to maintain consistency and fairness in weightlifting events around the world.

Related Questions:

Why are gym plates made of metal? Metal is durable, corrosion-resistant, and can withstand the constant impact and wear of weightlifting exercises.
What is the heaviest weightlifting plate? The heaviest plate is typically 450 lbs.
What is the difference between a bumper plate and a standard plate? Bumper plates have a rubber coating that absorbs shock, making them suitable for exercises that involve dropping or throwing the weights.
How many plates make up a complete barbell? A standard barbell typically consists of two 45-lb plates, two 25-lb plates, two 10-lb plates, and two 5-lb plates.
What is the weight of a standard Olympic bar? An Olympic barbell weighs 45 lbs.

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