Blogg
Trening, forklart
Periodisering, hybridtrening og logging. Fra teamet bak Zirv.
Nyeste
Interval running workouts: structuring work/rest that progresses
How to structure interval running with work/rest ratios and heart rate zones, and how to progress intervals week to week without guessing.
2026-07-16 · 5 min lesetid
2026-07-16 · 4 min lesetid
Why offline-first matters in a gym with bad reception
Gyms are concrete boxes with terrible signal. What offline-first actually means in a workout tracker, and why a sync spinner mid-set is a design failure.
2026-07-14 · 5 min lesetid
Estimated 1RM: how to track strength without maxing out
What estimated 1RM is, the formulas behind it, and why charting e1RM from everyday working sets beats testing a true max.
2026-07-14 · 5 min lesetid
Heart rate zones for running: what the numbers mean
How the five heart rate zones are calculated, what each one trains, and how zone data turns a raw bpm number into a training decision.
2026-07-14 · 4 min lesetid
Running cadence: what steps per minute actually tells you
What cadence measures, why there is no magic 180, and how to read your steps per minute without chasing someone else's number.
2026-07-14 · 4 min lesetid
What your tracker should say mid-run (and when it should shut up)
The audio cues that actually help mid-run, the ones that are noise, and the design rules that keep voice feedback rare and useful.
2026-07-13 · 5 min lesetid
Supersets and alternates: programming beyond straight sets
How pairing exercises into supersets and swapping in alternates changes what a workout log actually needs to track, and how Zirv handles both.
2026-07-06 · 5 min lesetid
How to plan a deload week (and why your app should do it for you)
What a deload week actually changes, why picking the date by calendar guesswork misses the point, and a data-driven alternative.
2026-07-06 · 4 min lesetid
RPE explained: logging effort, not just weight
What RPE actually measures, why the same weight can mean two different things, and how logging effort turns training data into something you can act on.
2026-07-06 · 6 min lesetid
Strength and running in one week: how to program hybrid training
A practical weekly framework for fitting lifting and running together so neither one cancels out the other's progress.
2026-07-06 · 3 min lesetid
What progressive overload actually is (and how to automate it)
The principle behind every effective strength plan, and why running it by hand falls apart after week three.
