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F45 Challenge Muscle Gain Stack

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Product Description

No matter your goal, we've got a stack to suit you! Wanting to put on some muscle? Keep reading.

The F45 Challenge Muscle Gain Stack contains:

To optimise your muscle gain results, we recommend the following:

  • 1 scoop of C4 Pre Workout 15 minutes before training
  • 5g of creatine every day (can be mixed with anything and taken at any time)
  • 1 scoop of protein post-training

Why these products?

C4 Pre Workout helps you turn your ambitions into achievements. It is the perfect pre-workout formula - bringing you energy, endurance, focus, and pumps. It'll help you train harder and make the most out of every session.

Creatine increases the body's ability to produce energy rapidly. It helps you to lift more weight and for longer, which enables you to build more muscle. Creatine needs to be built up over time so it is most beneficial to take 5g every day, regardless of whether or not you are training. It will also help you recover faster with time.

Protein is the most important nutrient for building lean muscle as it is the building block of your muscles. The amino acids in protein are essential in repairing and maintaining muscle tissue. Many people struggle to consume an adequate amount of protein through meals alone so consuming a shake after working out can help to supplement this. A high protein diet also helps to boost your metabolism and increase fat burning, meaning your body will prioritise gaining muscle when eating in a calorie surplus. 


All orders $50 and over receive Free* Shipping Nationwide 

Estimated Delivery Times*:

Auckland and North Island – Overnight

However many Auckland orders will be delivered the same day depending on what time the order is placed)

South Island – Overnight (For larger parcels allow 2 business days)

Same Day/Evening Express Shipping upgrade available at checkout for select suburbs*

Click here to view the full Shipping Details and Returns Policy.


Sprint Fit F45 Challenge Muscle Gain Stack Reviews

4.65/5 based on 323 reviews
5 star
4 star
3 star
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1 star

Overall Rating

9.3 /10

323 Ratings

Average Flavour Rating

9.5 /10

26 Flavours

Top Rated Flavour

10 /10

Vanilla Ice Cream


9/10 Icy Blue Raz

Nice flavour

10/10 Strawberry Milkshake

One of the best tasteing powders i have tried in a long time.. highly recomend and will continue too buy

10/10 Icy Blue Raz

This pre work out is awesome! Gives me the boost I need to work harder at the gym. I take it about 30 minutes before I work out. Bonus is it tastes amazing!!
Brought the vanilla ice cream flavour too try, sorry but it is so sweet Im rather disappointed with my pick but went off the reviews and gave it a go. Not my kind of protein powder taste. Service and post was so quick

10/10 Peanut Butter Puffs

Love love love! The Peanut Butter Puffs flavour is amazing. I add it to my Oats and smoothies and it is delicious! Will definitely purchase again.

10/10 Green Apple

Delicious! Makes me push at the gym. Would recommend

7/10 Green Apple

I like this pre work out a lot does help when working out
Great product, great results and awesome service

10/10 Chocolate Caramel

I’m so fussy about flavour but this tastes amazing and blends well!

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