Not sure how she does it?

So today was going to be a rest day until my sister messaged me to say that there was a space in Total Body Conditioning at 9:30am and don't forget to book Circuits on New Year's Day!

Total Body Conditioning is:

Non stop with weights and dumbbells. I can't use a step due to my ankles so I do the exercises on the floor. Totally shattered after running and Body Pump yesterday.

Me: I'll see you Saturday 

Tanya: what no circuits tomorrow?

Me: I'm running in the morning

Tanya: Probably not then

Me: No probably not

Tanya: No body pump tonight then?

Me: No! 

I don't know how she does it?!  It is not like she uses little weights either.....