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Functional Idaho (Previously Jack City Fitness)

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At Functional Idaho, our mission is to help people build the physical strength, mobility, and longevity needed to live capable, active lives. Our coaches use the proven principles and training methods of StrongFirst to develop practical strength that carries over beyond the gym—helping our members move better, become more resilient, and stay strong for the long haul.

Through kettlebell, barbell, and bodyweight training, StrongFirst gives us a systematic approach to strength that complements everything we do at FunctionalIdaho.com

Gym Owner / Operator Professional Background
1. StrongFirst Qualifications
MARSHALL WEBER Owner/Founder: L1, L2, Barbell, and Bodyweight certs. Certified Elite Instructor
2. Affiliate Qualifications
3. Other Qualifications
NSCA CPT, NASM CPT, Tactical Strength and Conditioning Facilitator, Reflexive Performance Reset Level 1 & 2, Crossfit Instructor Level 1 & 2, Functional Pattern Human Foundations Level 1, Functional Range Conditioning - Mobility Specialist, Functional Anatomy Kinstretch Level 1, USA weightlifting Level 1, Pain Free Performance Specialist, Adaptive training academy - Adaptive and Inclusive Trainer, Morozko Method - Deliberate Cold exposure, ISSA CPT, ISSA Glute Specialist
Lead Instructor (if different from owner / operator) Professional Background
1. StrongFirst Qualifications
Morgan Burger: KB Level 1, and Bodyweight
2. Affiliate Qualifications
3. Other Qualifications
ACSM CPT, NASM CPT, USAW Level 1, Pain-free performance specialist certification, certified nutrition coach, Associates in exercise science, ATA inclusive trainer, Registered EMT.
Assistant Instructor Name(s) and Professional Background
1. Instructor Names and Backgrounds
Matt Bostaph — Challenges clients and leads by example. Zoe Scholl — Detail-oriented coach, dedicated kettlebell athlete, and strong practitioner. David Woody — Rehabilitation-focused coach with extensive experience. Constance Bostaph — Accomplished athlete who leads by example and deeply invests in training Kenzie Harnack — Broad background in rehabilitation, BFR training, and CrossFit. Juliebelle Guerrero — Small but mighty coach and fierce advocate for clients
2. StrongFirst Qualifications
Matt Bostaph — ISSA CPT • ISSA Nutrition • ATA Inclusive Trainer • SFG I • StrongFirst BW attendee Zoe Scholl —NASM CPT • NASM Nutrition Coach • NASM Virtual Coaching Specialist • SFG I David Woody —Licensed PTA • NASM CPT • ACE CPT • ATG L1 • Brookbush HMS • StrongFirst BW • Performance Nutrition • SFG I attendee Constance Bostaph — ATA Inclusive Trainer • SFG I • StrongFirst BW Kenzie Harnack — SFG I • rehab & BFR training Juliebelle Guerrero —NASM CPT • NASM Nutrition Specialist • SFG I
3. Affiliate Qualifications
4. Other Qualifications
Additional Information
1. Training modalities / disciplines in use at your gym currently
StrongFirst principles are foundational to our team's training philosophy. Our core team has attended StrongFirst certifications together in Chicago, Idaho, and Utah, both highly formative experiences. We integrate these principles throughout our programming using primarily kettlebells, barbells, dumbbells, bodyweight training, and free weights, with very few machines.
2. Programming in use for private or group classes
We provide individualized programming for nearly 400 partners, with roughly half participating in group training. Classes are capped at 12 to maintain a high coaching standard. Kettlebells are used extensively alongside strength, mobility, power, and conditioning work.
3. Listing of services / classes offered at your facility
Services & Classes: We offer group, semi-private, private, at-home, and online coaching. Ladies Lift Hybrid Bodybuilding Faith & Fitness Elite Fitness Olympic Weightlifting Kettlebell With Zoe Functional Strength and Mobility Youth Fitness
4. Demographics of gym users
Our partners range from approximately 3 to 84 years old, including beginners, families, older adults, rehabilitation clients, recreational athletes, competitive athletes, and youth.
5. Ideal students
We serve a wide range of people and match partners with the coach and program best suited to their needs. The common denominator: people ready to take their health seriously and actively pursue greater strength, mobility, and longevity.
Training Equipment at Use in Your Gym Currently
1. Kettlebells (brands, sizes, quantity)
Vast majority of bells are rogue fitness, we do have some PB's 4 4 kg 8 8 kg 8 12 kg 8 16 kg 8 20 kg 8 24 kg 6 28 kg 6 32 kg 4 40 kg 2 48 kg 2 56 kg 2 68 kg 2 80 kg 2 92 kg
2. Pull-up bar (yes / no)
Ton's on our racks.
3. Barbell Equipment (bars, weights, racks, etc.)
We have 12 squat racks. Bars for all of them, womens bars, deadlifting bars, and specialty bars. Weights= 3600 pounds not counting bumper plates.
4. Other Equipment
Cardio equipment: Woodways, Bikes, Fan bikes, versa climbers, Monkeymill, skiergs, rowers, 4 of each. Weights: DBs ranging from 5-150s, trapbars, powerplates, medballs, chains, rogue weight releasers, cable machines, boxing, etc... They are listed on website and very extensive!

Gym Specs

Leader: David Woody
Established Date: 3/27/2026
Phone: 208-999-1111

Address

21 N Allumbaugh St
Boise, Idaho 83704
United States

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