Look at other people and now look at yourself. You are so different in almost every parameter, right? Now, look at yourself today, yesterday, the day before and so on. Although you are still the same person, you are different each and every day. So, what do I mean by saying that?
There are a lot of different variables that affect each individual and they change daily. Those variables can be: fatigue, food consumption, mental tension, depression, minor weakness, small injuries, motivation and many others. Such variables need to be counted when you are working out.
In workout methods such as: Tabata, HIIT, Insane etc., the trainer needs to follow certain training time and rest. In a general strength workout regime at the gym or with a personal trainer, the trainee needs to follow a certain amount of repetition per set with a specific weight. The diversity among people and the different variables that are changing every single day that affect our lives and workout, need to be counted.
Therefore, it is illogical to give definite amount of reps with specific weight or particular rest time to a trainee in every training session. Basically, the trainee needs to have a wide range of rest time and variation of reps with specific amount of weight. For example, it is well known, for the trainers and trainees, that if one wants to work on strength he or she should do between 8 to 15 reps. However, when trainees are working out at the gym most of the trainers write them a specific amount of reps per exercise. Although on some days the trainees are feeling quite good and can do more reps than the given number. In that case, the trainees need to know that they can exceed their particular number of reps or alternatively raise the weight.
[bctt tweet="Adjusting Your Workout According to Your Physical and Psychological Abilities"]
Let me give you another instance connected to the duration of rest time and active time in a workout. Let's use the HIIT workout as an example. When one does a workout with a specific rest time and active time (like most trainers give in group sessions and videos on YouTube), three things can happen:
The workout will be just fine for the trainees and, of course, this is the best outcome.
One can push himself too much and it can lead to an injury.
If one does not push as much as he or she can, their workout is not going to be very effective.
For such problems, time ranges are sorely important in a workout like this.
Namely, a truly important aspect the trainee needs to be aware of is his or her own body. This way the trainer can adjust the training sessions according to the abilities the trainee has in a specific training day. On days when the trainee didn't sleep or eat much, or days with a lot of stress and general weakness, the trainer should provide more rest time or alternatively reduce the weight or reps. In contrast, when the trainee had a good day by eating 4-6 organized meals and isn't suffering from small injuries or any fatigue, the trainer can reduce the rest time in workouts such as HIIT, and increase the amount of weight or reps in strength workouts.
Finally, if you are a fitness trainer, you should be able to understand your trainees physical and psychological abilities before introducing a workout regime. And if you are a trainee, you should be able to communicate your physical and psychological abilities to your trainer so your workout can accommodate your needs.
Remember, numbers are just numbers. Your body is too complex and too flexible to be dependent on them.
Source: Yogev Baron