ysst
New member
Posts: 2
I ( a 14 y/o girl) have been working out for about a year now and recently i started one of the HIIT programs. I am wondering if i should pair it with another workout, or should i just keep doing it by itself. I am not overweight, but i am trying to build some strength and lean muscle.
I will be really thankful if somebody can help me.
I will be really thankful if somebody can help me.