So to actually be helpful and answer op’s actual question.

Any physical activity will help to an extent.

What will help more for weight loss is counting calories and expending more than you consume.

But if you want to have any kind of actual muscle tone you need to do resistance training, wrenching alone isn’t enough.

If op is cool being skinny/ low muscle tone, then diet and cardio will do it. If op wants muscle tone then they should lift weights or do some resistance training like calisthenics.

Nope, diet and exercise.