Chloe Ting! Calling anyone who has done her 2 week challenges!

Decided to try it because I was bored with my usual workout, I am 7 weeks PP. I literally just finished the workout and as I sit here I don’t feel it in my core, legs, or arms like I would with my usual workout. I’m confused. After finishing the workout I just don’t feel happy, proud, upbeat like I would with my usual routine. Some of these workouts were a bit harder on me so I couldn’t complete 3 of them. Are the workouts she posts on YouTube supposed to only last the 15 minutes? After the first day how did you feel?