You can’t tell if you’re losing weight or getting stronger without some measurements. Our bodies need to be constantly challenged in order to adapt and get stronger. If you do 3 sets of 10 push-ups every day for a year…you will just be really good at doing 3 sets of 10 push-ups and nothing more.
Here are some of the reasons tracking can help:
Scales don’t tell the whole story. I’ve already covered my thoughts on scales. If you are training the right way (with an emphasis on strength training), your weight might not drop as fast as it would if you starved yourself and ran 20 miles a day.
You don’t know if you’re on the right path. Along with the scale not telling the whole story, it’s tough to tell if you’re losing the right kind of weight in the right kind of places.
There are so many other aspects to consider other than the number on the scale, including how you look, feel, and where the weight loss is coming from – your muscles or your stored fat.
You don’t know how much you’re eating. If you’re overweight, you might think your metabolism is broken and you simply can’t lose weight. (Tracking some things will tell a different story). If you’re underweight and “can’t gain weight no matter what you eat,” you probably don’t realize how many calories you consume on a daily basis.
You need to constantly increase the difficulty of your workouts in order to get results. This concept of “progressive overload” is the cornerstone of strength training. If you didn’t know how you did last time, how the hell are you going to know if you’re doing better this time?