Once I started applying a “main-line mindset” to fitness and life, everything became much simpler
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Today I did a session of bodyweight training + a short run, and also recorded some reflections during the process. As training time accumulates, it becomes increasingly clear that fitness is essentially a “input equals feedback” system — as long as you keep doing it, results will gradually show.
Training Summary
Today it was a bit rainy. I completed a full-body bodyweight workout and then ran 1 km before stopping.
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The bodyweight workout covered the whole body, including movements such as plank leg raises, plank side knee drives, single-leg squats, bench dips, and Tyson-style push-ups. Each was done for 2 sets. The “signature move” — pull-ups — was skipped today to allow muscle recovery.
As my training cycle gets longer, I’ve been applying more insights learned from social media. I increasingly feel that fitness is one of the most fair things in the world — as long as you put in effort, results will come. This also confirms Nike’s classic slogan: “Just do it.” Only by doing can you truly apply what you learn; thinking without action is the biggest pitfall.
Some key principles I’ve been applying:
Do anaerobic training before aerobic training. This helps reduce body fat while preserving muscle mass. Dynamic stretching before exercise, static stretching after exercise — to prevent injury and reduce soreness. When running, keep heart rate below max heart rate, ideally around (220 - age) * 0.8.
Current quantitative goals:
- Body fat below 15%
- Weight under 71 kg
- 20 pull-ups
- Ability to perform a muscle-up
A Useful Indie Mindset
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This mindset was learned from social media, shared by a successful indie builder.
It can be applied to building internet products in the following way: prediction, single-point breakthrough, all-in.
Prediction: Evaluate whether the product addresses a real demand and whether the market is growing. For example, around 2014, with the rise of mobile internet, Android was in a strong growth phase — building mass-market apps on Android was a good idea. Similarly, in the current AI era, building around AI has huge potential. Ideally, your product should align with a trend that keeps growing, so you can ride the wave of technological progress.
Single-point breakthrough: Once you choose a feature or direction, focus on making it the best in the industry. During development, the guiding principle should be simplicity or minimalism. If one screen can do it, never make it two.
All-in: After focusing your energy and building one strong point — and confirming it matches your initial prediction — you can fully commit and expand your scope.
This mindset can be applied to almost any consumer internet product.
What is Your Main Line?
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A habit I find very useful is constantly reminding yourself of your “main line.”
Modern phones and apps are designed to capture your attention. Short videos, for example, are extremely effective at hijacking attention — once you start scrolling, you can easily forget to eat or sleep. A simple push notification can steal 30 minutes of your time.
But to actually accomplish meaningful things, what you need most is focused time and energy. How do you avoid distractions?
You keep reminding yourself of your main line. In your mind, constantly answer: what is my core focus right now?
The main line is essentially the only long-term goal you are continuously pushing forward at your current stage.
It allows your effort to compound over time.
The word “compound interest” alone is enough to motivate building this habit.
Whether in fitness or work, what truly creates differences is not methods, but sustained effort on the same main line. When you keep returning to your main line, reduce distractions, and concentrate your energy in one direction over a long period of time, time creates compounding effects — and results naturally amplify.