Right now you may be someone who is starting a NEW YEARS FITNESS Resolution.
You may not have trained for a few months or years.
I encourage you NOT to train 5 times per week and push yourself hard during January.
Instead, train 1-3 times per week with at least one days rest between your training sessions.
You are not FIT enough yet to be pushing hard everyday.
When you train, your body breaks things down and goes into an ALARM stage. It then recovers, rebuilds and super compensates by getting everything ready for the next training session.
You will disrupt this natural rebuilding process if you train everyday especially when you are de-conditioned our out of shape.
By having rest days during January you will be better equipped to handle the training load and not get hurt or demotivated when busy life takes over and you cannot make your 5-6 sessions that week.
Anyway, if it's weight loss you are after, it will be your nutrition that makes the biggest dent with your goals.
Instead of giving up everything and making yourself depressed, why not make 1-2 major changes and get started that way.
I am willing to bet that most of you can make 1-2 changes to get good initial results and then you can fine tune.
Trust me, when you get to February you will have lost 1-3kg's, you will be feeling rested and fitter and you will want to continue for the rest of the year.
Most people will hammer themselves during Jan and either get hurt or give up because their bodies just cannot last that pace.
You have all year to get fit and make changes. Most of you won't be fit enough yet to handle five training sessions per week without your body breaking down.
Try not to get to February thinking that "you are done with this fitness thing" already.
That is the clearest sign that you have done too much too soon.