Build Your Base™ · Twin Falls, ID

Get Stronger for the Life You Actually Live.

Expert strength coaching for adults in Twin Falls, whether you're starting from scratch, returning after years away, or tired of guessing what to do in the gym.

Book a Free Intro Explore Coaching Options

Small-group coaching. Individualized programming. Steady progress, without random workouts or gym intimidation.

An adult pressing a barbell overhead with good technique
If a doctor or PT sent you here

“You should start resistance training” is good advice. It just isn't a plan.

Knowing strength matters is the easy part. Knowing what to do, how heavy to start, how to train around old injuries, and how to keep progressing is where most people get stuck. At Ground Zero Strength a coach teaches the lifts, builds the plan, watches the work, and adjusts it as you improve.

Three ways to train with us

Find the Right Starting Point

Strength Coaching for Adults

For adults who want a clear plan, hands-on coaching, and measurable progress. Small-group personal training built around you.

Explore Strength Coaching

Women's Strength With Ashley

Structured strength coaching for women who want to build muscle, confidence, and long-term capability, without extreme dieting or random circuits.

Train With Ashley

Physical Therapy + Return to Strength

For people dealing with pain, returning from injury, or bridging the gap between rehab and confident training, with Dr. Nicole Sharp.

Meet Dr. Nicole
Why strength, why now

Strength Is the Base Everything Else Sits On

Strength isn't about chasing a number for its own sake. It's the physical base that keeps you capable, confident, and doing what you care about for decades.

  • Maintain and build muscle as you age.
  • Support bone health and everyday resilience.
  • Move through daily tasks with confidence.
  • Keep hiking, hunting, skiing, golfing, and keeping up with family.
  • Build capacity now, before it becomes urgent.
An adult training at Ground Zero Strength in Twin Falls
How it works

Three Steps, No Guesswork

1

Start With a Conversation

We talk through your goals, training history, schedule, and any concerns. No surprise workout, no sales ambush.

2

Learn the Plan

A coach teaches the movements and sets an appropriate starting point for where you are today.

3

Build Strength Over Time

You train consistently while your coach tracks progress, adds weight intelligently, and adjusts the program.

A Ground Zero Strength coach watching closely as a member bench presses
What makes us different

Most Gyms Sell Access. We Sell Coaching.

A membership gets you a room full of equipment and no idea what to do with it. Coaching gets you a plan and someone in your corner making it work. It's the individual attention of a personal trainer in a small group, at a fraction of the one-on-one cost.

  • An individualized plan built around you, not a class workout.
  • Technique taught from the very first session.
  • Session oversight and live coaching, not a room you're left alone in.
  • Progress that's recorded and adjusted as you get stronger.
  • Intelligent modifications for old injuries and busy schedules.
  • A path that carries you from beginner to genuinely strong.
Your coaches

Coached by People Who Do This for a Living

Sam Krapf, owner and Starting Strength Coach

Sam Krapf

Owner · Starting Strength Coach

SSC with a B.S. in Biology and M.S. in Sports Performance. Coaches everyone from first-timers to experienced lifters.

About Sam →
Ashley, women's strength coach at Ground Zero Strength

Ashley

Women's Strength Coach

Approachable, structured strength coaching for women. Full bio and credentials to be confirmed.

Women's coaching →
Dr. Nicole Sharp, physical therapist

Dr. Nicole Sharp

Physical Therapy · Independent Provider

Sharp Physical Therapy and Performance, LLC, located inside GZS. Credentials and services to be confirmed.

Physical therapy →
Common questions

Before You Start

Do I need strength-training experience?
No. A lot of our members have never touched a barbell, or haven't trained in years. A coach teaches you the lifts from the ground up and starts you at a weight that fits where you are today.
Is this a class or personal training?
Neither, exactly. You train in a small group, but you follow your own individualized program with a coach watching your lifts and adjusting as you go, so you get coaching without the cost of one-on-one personal training.
Am I too old to start?
A 45-, 55-, or 65-year-old beginner is normal here, not an afterthought. Strength training is one of the most useful things you can do as you age, and we start people where they are.
What if I have old injuries or current pain?
We coach around history and limitations rather than telling you to simply stop lifting. If pain is the main issue, Dr. Nicole Sharp's physical therapy path may be the better starting point, and we'll point you there.
Do I need to be in shape first?
No. Starting is how you get in shape. You don't need to prepare before you come in.
Will I have to compete or lift like a powerlifter?
No. The barbell lifts are simply the most effective tools for getting stronger. Whether you ever test a max is entirely up to you.
How often do clients train?
Most members train two to three times per week. We build the schedule around your life, not the other way around.
What happens at the free intro?
It's a conversation about your goals, training history, schedule, and concerns, plus a look at whether GZS is the right fit. No surprise workout and no pressure.
Should I start with a coach or with Dr. Nicole?
If you mainly want to get stronger with a plan, start with a strength coach. If pain or a recent injury is keeping you from training normally, start with Dr. Nicole's evaluation. Not sure? Tell us on the Start Here page and we'll route you.
Where is Ground Zero Strength located?
We're in Twin Falls, Idaho, at 647 Filer Ave #101, serving Twin Falls, Kimberly, Filer, Buhl, Jerome, and the wider Magic Valley.
Start where you are

You don't need to get in shape before you start. Starting is how you get there.

Book a free intro and we'll talk through your goals and the best way in.

Book a Free Intro
Book a Free Intro