So, firstly I would say this. One of the most common mistakes I see is people training too hard, too often, then wondering why they feel wrecked and stuck.
BLUF: a lot of your training should feel easy. Gentle, aerobic, conversational effort is what builds the engine everything else runs on.
That being said, I know it feels counterintuitive. We are told no pain, no gain. But the athletes with the biggest engines spend most of their time going steady.
What "easy" actually means
Here is the simple test: could you hold a conversation while you do it? If you can talk in full sentences, you are in the right zone. If you are gasping, you have gone too hard for this kind of session.
This easy, aerobic work is sometimes called Zone 2. The name does not matter. The feel does.
Why it works
Easy training builds the base:
- It grows the tiny power plants (mitochondria) that produce your energy.
- It builds more blood vessels and a stronger heart.
- It teaches your body to burn fat for fuel, sparing your reserves.
- And it does all this without beating you up, so you can do it often and recover well.
So what that means is: easy days are not junk miles. They are where a huge amount of your fitness is actually built.
The mistake to avoid
If every session is a hard session, you never recover, so you never adapt. You just pile up fatigue. Going easier, more often, is what lets your hard days actually count.
Here's what to do:
- Make most of your sessions genuinely easy. Conversational pace.
- Keep one or two harder efforts a week, no more.
- Judge it by how you feel, not by your ego.
The takeaway
The fastest way forward is often to slow down. Build the engine with easy, consistent work, and everything else, your speed, your strength, your endurance, gets easier.
Slow down to speed up.