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#training-load

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Training

How to keep a training log that actually works

Keeping a training log is no longer just the reflex of a methodical athlete. In 2026 it has become a real lever for progress, as useful to the self-coached athlete as to the coach who wants to steer load, recovery and consistency more finely. When you write down what you do, how you feel and what changes over time […]

Training

HRV | Heart rate variability and training

Heart rate variability (HRV) has become an increasingly useful reference for understanding what the body is genuinely able to take day to day. It is not about following one more number on a watch or an app: it is above all a way of reading your recovery […]

Training

Training monotony | Vary your training to progress

Training monotony is an underrated subject, even though it bears directly on progress, fatigue and injury risk. When workouts look too much like one another from day to day, the body stops receiving a signal nuanced enough to keep adapting effectively. In the short term that can look like consistency; in the medium term it usually […]

Training

What is RPE | A guide to using it in training

If you take an interest in training, you have certainly wondered what RPE is and why everyone talks about it. This simple rating of perceived exertion has become a central tool in strength and conditioning, in the gym and in endurance sport. It lets you steer intensity day by day, with no sensor, purely from how the effort felt. […]

Training

Calculating Foster training load: the complete Slek guide

Measuring your athletes' training load should not require a laboratory or expensive equipment. The Foster method offers a simple approach built on what the athlete actually feels at the end of a workout. By combining the duration of the workout and RPE (the rating of perceived exertion), you can track […]

Training

Periodization in sports training

This article explains what periodization is, why you cannot do without it, how it works, and how to bring it into your own training with Slek.

Training

Training monotony in sport

Your Slek app tracks your training monotony index. Here is why that number matters.

Training

TRIMP vs Foster: which training load model should you choose?

Amateur or elite, knowing how to dose the intensity of your training is essential if you want to improve without getting injured. Quantifying training load is the tool for that. Among the most widely used methods, TRIMP (Training Impulse) and the Foster model let you […]