I am trying to say why sentencing sex offenders life imprisonment is better way to punish them and if you see any mistakes in the following sentence, can I have your comments?
In addition, learning physical emplyment skills will help sex offenders put enery and effort to constructive works.
In addition, learning physical skills will help sex offender to put their energy into constructive areas.
I would not use "employment" in this regard. It appears that your point is that sex offenders should be imprisoned for life therefore they are not going to be taking employment in the future. Keeping people (prisoners or not) busy physically is important in maintaining health (both physical and mental).