Performance tests

Carbohydrate test BIKE and RUN to optimize your nutrition


Your performance assessment in form of carbohydrate tests


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you were looking for?

We also provide monthly and yearly plans for your start

See our plans & pricing

Frequently Asked Questions

Why should I know my carbohydrate combustion?

Knowing your carbohydrate combustion is good in order to ensure your fueling during training and on raceday. Every second athlete is using the wrong nutrition and hydration strategy.

BESTZEIT Experts tip: You'll also be able to pace your race knowing your carbohydrate combustion.

Is it really free?
The starter version is really free and it allows you to create unlimited test sessions to generate your individual sweat profile.

Depending on your needs we offer additional schedules, ending up in the IRONMAN® plan - within that you can relax and focus on your training itself. We cover the part of your fueling - regardless of your nutrition supplier.

You'll find a free plan in our Plans & Pricing.
How can I integrate my results in the app?

An integration screen in the app is coming soon. Just type in your values and we will use them in the background for our calculations.

No time to wait? No problem. Just send us an email. We will directly integrate your results.

Get more information about the App

What is the sweat pack?

With our sweat diagnostic kit, the Sweat Pack, you can easily analyze your sweat during your workout.

The composition of sweat varies from athlete to athlete. Sweat consists of 99% water and is primarily used for thermoregulation. Sodium is dissolved in it and is the most important electrolyte in the context of substitution.

The sodium content varies between 200mg and 2300mg per liter of sweat.

The basis of the Sweat Pack is a scientifically validated method which was designed for sweat analysis in the field and further developed by us.

How does the sweat diagnostic kit work?

In your sweat kit you can find a flyer with further instructions about wich steps you should pass to get your personal sweat analysis. For more details you can take a look in our 'How to use the sweat kit'.

What is your individual sweat profile?

If there is a major, unbalanced sweat loss, your blood volume decreases. The blood becomes more viscous and the oxygen transport to your muscles is reduced. Already from a sweat loss of more than 2% of your body weight, your body therefore limits its performance.

Depending on the type of sport, indoor or outdoor and under very warm conditions, your sweat flow can be up to 4 liters per hour.

We will take all the parameters into account to get the most individual support as possible. In our App you can figure out your individual sweat profile.

How can I optimize my carbohydrate combustion?

To determine your carbohydrate needs you perform a sprint test to find out your anaerobic capacity as well as a 3 step test to collect information about your VO2max, your threshold power and many more metrics. By sending in your results you will receive a notification in your app with detailed results.

What is the carbohydrate combustion?

The amount of energy you have stored in form of carbohydrates in muscle and liver glycogen is biologically limited. 

Your carbohydrate combustion is the connection between your recommended carbohydrate intake and your power output, depending on your training level, your current threshold, VO2max and much more.

We can show you how much carbohydrates you'll need aligned to your current power output.

For your race day we will create a 100% customized fueling and pacing strategy based on your own and individual data.

You can get more information about the procedure in our Carbohydrate Test section.


How can the App help me?

The app supports you in creating your individual sweat profile. Based on that we will create your fueling strategy.

Considering your individual energy demand, your race course and your sodium loss in correlation, we will be able to provide you a 100% individual pacing strategy.

The BESTZEIT app is a new way to sum up your pains in the fourth discipline and break your personal best. 

Download the App here!

What is the best time for testing?

We recommend to test at the beginning of your training cycle before your main / high intense training phase as you come closer to race day.

The perfect timing for your last test would be 2-3 weeks before your final raceday.

Should I purchase a plan?

Nutrition out of mind in training and in competition.

With our individual plans, we cover your back in the issue of nutrition regardless of your nutrition supplier.

Our loew monthly payment provides you with no risk. So you don't have to worry.

For more information check our Plans & Pricing

Is my data safe?

BESTZEIT is a company in the Southwest of Germany. We are subject to german data protection regulations.