THE FITNESS SF BLOG

We often think of aging as something that simply happens to our bodies. We lose some strength, slow down, and perhaps become a little less capable than we used to be.

A dedicated Glute Zone gives you a focused space with purpose-built machines to train your glutes safely, effectively, and consistently. Instead of improvising with benches and barbells, you get equipment designed around hip extension mechanics, helping you build strength, power, and shape with fewer setup hassles.

For decades, conversations around obesity and fitness have been dominated by one outcome: weight loss. Step on the scale. Count the pounds. Track the BMI.

Aging changes the body — but decline is not inevitable.

If you hang around our gyms long enough, you’ll hear some version of this debate in every locker room:

“If I want to lose fat, should I just do cardio?”
“But I heard lifting is better because it boosts your metabolism.”
“What if I do both—will they cancel each other out?”

A 2025 systematic review and meta-analysis (36 randomized trials, 1,564 adults) just took a hard look at this exact question: comparing aerobic training (cardio), resistance training (strength), and concurrent training (both in the same week) and how each affects body fat, body weight, and muscle mass (PubMed). Here’s what it means for you at FITNESS SF.

Most people own a scale. Most people also know how misleading a scale can be.

One day you’re “up.”
The next day you’re “down.”
Nothing about your training changed — but the number did.

That’s because body weight alone tells you almost nothing about what’s actually happening inside your body.

When a new or returning member sits down with me at FITNESS SF, I’ll often hear