group fitness classes with Sara Krosch
Movement
Music
Motivation
Join us for weekly in-person group fitness classes on Hawaii Island
CURRENT group fitness CLASSES
Classes are held Fridays 4pm at the Puna Hongwanji in Kea'au, East Hawaii Island. Sessions feature strength-focused formats created and taught by Sara Krosch: Pactive Fitness, Muscle Hustle, and the new AMRAP & Roll.
Bring a mat, weights and water to class. All other equipment provided. See class descriptions and the current class schedule below.
Pactive Fitness
This 45 minute classes covers all the bases of physical fitness: cardio, strength, balance & flexibility. Class consists of a warm up, resistance segments using dumbbells and an optional looped resistance band, cardio section to get our hearts pumping, core strength segment and a yoga-inspired flow focusing on stretching and mobility. New choreography every class so you'll never get bored! Options are given for low to moderate intensity.
Bring your own mat and light to medium weight dumbbells. All other equipment provided.
Muscle Hustle
This 45 minute interval training class gets the work done quick! Class consisit of a warm up and 7, 5 minute segments of alternating 30 seconds work/10 seconds break. Fresh choreography each class focusing on upper body, lower body and core strength utilizing compond moves with body weight, dumbbells and an optional looped resisitance band. Options are given for low to moderate intensity.
Bring your own mat and light to medium weight dumbbells. All other equipment provided.
NEW CLASS
AMRAP & Roll
as many reps as possible + foam rolling
AMRAP & Roll is a 45-minute interval training style class with strength, cardio and core-focused blocks using weights and a variety of other resistance tools.
Reduce soreness and speed recovery time after your AMRAP workout with a 15 minute foam rolling session using a foam roller and other tools.
Bring your mat and weights. All other equipment provided.
August - October 2025 Class Calendar
NO CLASS September 26 & October 3
| Date |
Class Format |
Time |
| Friday Aug 1 |
Muscle Hustle
|
4 - 4:45pm |
| Friday Aug 8 |
Pactive Fitness
|
4 - 4:45pm |
| Friday Aug 15 |
Muscle Hustle
|
4 - 4:45pm |
| Friday Aug 22 |
Pactive Fitness
|
4 - 4:45pm
|
| Friday Aug 29 |
AMRAP & Roll |
4 - 5pm |
| Friday Sep 5 |
Muscle Hustle |
4 - 4:45pm |
| Friday Sep 12 |
Pactive Fitness |
4 - 4:45pm |
| Friday Sep 19 |
Muscle Hustle |
4 - 4:45pm |
| Friday Oct 10 |
Pactive Fitness |
4 - 4:45pm |
| Friday Oct 17 |
Muscle Hustle |
4 - 4:45pm |
| Friday Oct 24 |
Pactive Fitness |
4 - 4:45pm |
| Friday Oct 31 |
Halloween AMRAP & Roll
Wear orange or a costume and class is FREE!
|
4 - 5pm |
Save with a Class Pass
Try your first Big Island Active class for free!
Individual classes are $7 or save with a 5-class punch card for $30. Pay with cash, card, or Venmo. Punch cards do not expire.
Convenient
Puna Location
Join us at the Puna Hongwanji
Community Hall in Kea'au,
East Hawaii Island
Directions
Sara Krosch
Meet your instructor
- ACE Certified Personal Trainer & Group Fitness Instructor
- National Board Certified Health & Wellness Coach
- RRCA Certified Running Coach
- Yoga Body Certified Breath Coach
- Certified National Diabetes Prevention Program Coach
- Founder & Director of Vivawell, Hawaii Island-based health promotion nonprofit organization
- MA- Health Communication & Promotion
- BS-Teaching
- 20 years community health experience
- 8 years group fitness instruction
- Creator of Pactive Fitness, Muscle Hustle, AMRAP & Roll group fitness formats and Stretch & Roll workshop series
Try a Class On-Demand
Visit the Big Island Active YouTube Channel for a variety of recorded classes including Pactive Fitness, Muscle Hustle, PiYo, P90X, Barre, Foam Rolling Workshops and more.
BIA on YouTube
Newest BIA Workout Videos
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