Zone 2

Build the FoundationTrain Smarter, Not Harder

You have to be well-trained to train well. We write from experience on the road and in the research — not from an algorithm. Learn how sweetspot and zone 2 build the base that lasts the entire season.

The purpose is to build a foundation so solid it lasts the entire coming season. Sweetspot sessions improve lactate metabolism and build aerobic capacity in the muscles. Zone 2 targets fat oxidation. Together they build the base.

From our training philosophy

Our Approach

Written by Cyclists, for Cyclists

Our training advice is built on years of experience on the road and a systematic review of over 3,000 studies.

The Foundation: Sweetspot + Zone 2

64–70% of FTP builds fat oxidation through the Krebs cycle. 85–90% of FTP builds lactate metabolism. Together they create a base that handles everything the season throws at you.

The Fixed Flexible Week

2 interval sessions, 5 quality sessions, 2 rest days. Fixed structure, flexible content — adapted to your daily life and your level from recreational to competitive.

The Founders

Who we are

Two athletes who have tested most things, and learned to listen along the way.

Asbjørn Slagtern Fjellvåg

Co-founder

The most important thing I have learned about training is to actually listen to the body. Not what the program says, but how the legs feel when I start the warm-up.

Good shape feels a certain way, and bad shape feels a certain way, and after enough years you learn to tell them apart. Choosing the right session for what the body is doing today, instead of forcing the one on the calendar, is what gets you forward.

A good program also has to fit your life. If it falls apart when work gets busy, it is the wrong program. It needs to be flexible, but still smart enough that you actually get fitter.

The last few months I have done one hard interval session a week and the rest in zone 2. I have not felt this good in years.

Read about Asbjørn's last six months →

Vebjørn Hordnes

Co-founder

What I love most about cycling is the long, hard rides. Long climbs in zone 2, where I can just keep going hour after hour, is where I feel at home. I started my career at Trondheim Velocipede Klubb, had a peak year in Antibes near Nice where I rode an enormous amount, raced the Norwegian National Cup and Nordic races, and travelled to Belgium for the Kermesse races. The classics are what I burn for.

When I train, I visualize myself as a professional rider pushing the limits every single day. For me it comes down to three things: quality sessions that actually move the needle, building the threshold so I can hold the long races, and putting down the really high watts when the race is decided going uphill.

The last year I have done two interval sessions a week, zone 2 the rest of the time, and light strength training. That builds the base for the next step.

Read about Vebjørn's last six months →