Running my own system into a virtual machine
Just a curiosity, (I'm not an expert), can I run my current operating system in a Virtual Machine? (I'm on a Mac 10.5.8)

I mean, every VM software I've seen online claim to "Run Windows on your Mac", "Run Unix..." etc.
Can I run my own OS into a VM while I am using that OS? Like 2 different isolated sessions one inside the other.

Sorry for my non-technical jargon. 
Running my own system into a virtual machine
===

Just a curiosity, (I'm not an expert), can I run my current operating system in a Virtual Machine? (I'm on a Mac 10.5.8)

I mean, every VM software I've seen online claim to "Run Windows on your Mac", "Run Unix..." etc.
Can I run my own OS into a VM while I am using that OS? Like 2 different isolated sessions one inside the other.

Sorry for my non-technical jargon. 