Why the Strongest Athletes Are Sometimes the Hardest People to Coach
If you've ever watched an experienced athlete move, it's easy to assume everything they do is technically perfect.
Posts about:
Performance & Conditioning
San Francisco’s Biggest Weight Floor Opens in October
What to expect this October at FITNESS SF Polk
On October 1, we’re opening the doors to a new San Francisco strength training gym built around the city's largest weight floor and an unmatched range of strength equipment. Enjoy a spacious, purpose-built training space with expert staff ready to support you.
Woodway + CLMBR: What’s Coming to FITNESS SF Polk
The new Polk location is adding Woodway and CLMBR cardio equipment to give members low-impact, performance-level options for running, climbing, and hill work. These upgrades are designed to feel smoother on your joints while still delivering serious conditioning for beginners and experienced athletes.
Iron, Oxygen, and the Edge Between Performance and Damage
At FITNESS SF, we talk about progressive overload, VO₂ max, strength adaptation, and recovery. This discussion is based on a 2023 systematic review examining how iron levels influence physical performance in athletes.
How Exercise Prevents Frailty and Fragility Fractures
Aging changes the body — but decline is not inevitable.
The San Francisco Hybrid Athlete: Stop Choosing Between Strength and Stamina
It’s April 2026. The "New Year, New Me" phase is over. The "Performance Phase" has begun.
Cardio vs Weights vs Both: What Actually Works Best for Fat Loss?
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.
Beyond the Bathroom Scale: Why InBody Is the Smartest Way to Track Your Progress 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 “Getting in Shape” Meets the Fine Print: HIIT vs. Steady Cardio
You’ve probably heard this one on the gym floor: “Should I do intervals or just get on the treadmill and grind it out?” Behind that question is a real worry: Am I wasting my time if I don’t do HIIT?