
the bike indoor app made for you

science behind the sport
Call4Fit's mission is to democratize physical exercise. All our workouts are developed by Physical Education teachers and tested to optimize your fat loss and fitness level.
Our workouts have ratings for both beginners and advanced members. Our focus is the fitness audience and that's why we know that not everyone is in the same physical condition.
In case you don't know what your current physical condition is, we recommend starting with beginner's training and then reaching intermediate, expert and professional training.
music that moves you


and many more
be in shape!

C4 Spin

C4 Sprint
C4 Spin is an indoor bike workout (spinning) in which you control the intensity. This program is fun and low impact. With special music to motivate you on a cycling journey with climbs, sprints and straights, you can burn up to 900 kcal per class.
This modality has 3 pillars:
- Conditioning
- Fat loss
- Performance
Each mix has 5 lesson levels. The higher the level, the greater the difficulty:
Level 1 - Easy: 5-10 minutes
Level 2 - Beginner: 15-20 minutes
Level 3 - Intermediate: 25-30 minutes
Level 4 - Expert: 35-40 minutes
Level 5 - Professional: 45-50 minutes
Choose the correct level according to your fitness. If you don't know what your fitness is, we recommend starting with the beginner level.
Equipment needed: Indoor bike.
The C4 Sprint is a 30-minute HIIT (High Intensive Interval Training) workout where the focus is on conditioning and fat loss.
This modality is a very intense indoor bike training where power, strength and speed rule the entire class. The training has low impact and has been scientifically tested to maximize your results in a short class duration.
As it is a modality developed with the objective of reaching your HIIT factor, after class your body continues to burn extra calories for a few hours. All this with lots of motivating music to help you reach your goals!
Equipment needed: Indoor bike.

