I don’t like being the bearer of bad news, but…

“Toning” is not a thing.

In fact, the whole concept was designed as a marketing term to appeal to women.

Muscles can get bigger or smaller, but not firmer or softer.

You can’t “tone” by using smaller weights
You can’t “tone” by doing lots of Pilates
You can’t “tone” by doing high reps instead of low reps.

You can LOOK toned. This is a (subjective) aesthetic description.

LOOKING toned usually requires some combination of:
🏋🏻‍♀️ Increasing muscle mass, usually with some form of resistance training
🥗Reducing fat, usually with a calorie deficit
🧬Some amount of genetic luck

So next time you hear something marketing as a special “toning” program – remember that you are being marketed to 😉