In the past, one of the biggest mistakes that I commitmake about exercising was not tracking my progress.

"Commit" is usually used when it's something serious like a law broken or a crime. It still makes sense, though!

Now, I write down in a notebook how many reps and sets I did in my routine and by t. This way I can see my progress.

I can also add more reps and sets for the next week in a realistically way.

There's a quote that I like a lot which says, "you can't hope for different results by doing the same", thing". That's why I'm trying something different.

In the past, one of the biggest mistakes that I commitmade about exercising was not tracking my progress.

Now , I write down in a notebook how many reps and sets I did in my routine and by t. This way I can see my progress.

I can also add more reps and sets for the next week in a realistically way.

There's a quote that I like a lot which says "you can't hope for different results by doing the same", thing". That's why I'm trying something different.

In the past, one of the biggest mistakes that I commitmade about exercising was not tracking my progress.

Now I write down in a notebook how many reps and sets I did in my routine and by this wayso I can see my progress.

There's a quote that I like a lot which says, "yYou can't hope for different results by doing the same", thing," so that's why I'm trying something different.

In the past one of the biggest mistakes that I commit about exercingI made was not tracking my progress.

Now I write down in a notebook how many reps and sets I didhave done in my routine and by, in this way, I can see my progress.

I can also add more reps and sets for the next week in a realistically way.

what do you mean by "a realistically way"?

There's a quote that I like a lot which says "you can't hopeget different results by doing the same thing", that's why I'm trying something different.

In the past, one of themy biggest mistakes that I commit aboutin regards to exercising was not tracking my progress.

Now I write down in a notebook how many reps and sets I dido in my routine and byso this wayat I can seetrack my progress.

I can also add more reps and sets for the next week in a realistically way manner.

There's a quote that I like a lot which says, "you can't hope different results by doing the sameInsanity is repeating the same thing and expecting different results", that's why I'm trying something different.

I've started logging mywhen I exercises. / I’ve started logging the exercises that I’ve been doing.

The exercises = pull up, push up etc.
‘I exercise’ ‘I’m exercising’ = the action, the verb.

So in this context, it can only be the one or the other, but I’m not too sure so I’ve put both!

In the past one of the biggest mistakes that I commitmade about exercising was not tracking my progress.

I understand in Spanish it is said “cometer un error” = to commit an error. But, in natural English, we say ‘ hacer un error’ - to make a mistake:

“I made the mistake of eating too much last night.”

Now I write down in a notebookuse a notebook to write down how many reps and sets I dido in my routine and by this way I can see my progress.

Natural word order / usage of a notebook !

It would be “I do”

“I always do 20 pull ups.”
“I always do a quick run before leaving the gym.”

The natural usage is ‘this way I can…’

I can also add more reps and sets for the next week in a realistically way.

Realistically - adverb
Realistic - describing something, an adjective !

“Is that a realistic thing to say?”
“Realistically, I only have a day to do this.”

There's a quote that I like a lot which says "you can't hope for different results by doing the same", that's why I'm trying something different.

“I am hoping for a new puppy for Christmas.”