The barbell is arguably the single most important tool you can have in your weight room. Any serious strength and conditioning facility will be outfitted with a surplus of good Olympic bars. Some gyms have different bars for men and women (of different weights, lengths, and thicknesses) but the standard 45-lb bar is suitable to for both men's and women's programming. Barbells set the foundation for any program that focuses on developing speed, strength, and power.