Shift Shop Wk 1 D6 Strength 25 and Shift Core

I nearly moved on to Speed 35 today but decided to stick to the schedule with Mona.

Increased some weights and decreased others as I was using KGs instead of Lbs.
Used power stands again for floor work where I could.
In the Renegade Rows my plank felt stronger than last time so that was good.

Shift Core - I noticed significant improvements on almost every move so that was really surprising and exciting.

I won't lie my muscles feel a little tired today so I am looking forward to just Shift Mobility tomorrow before the start of Week 2 and the 35 mins workouts on Wednesday.

I'm never sure where to pitch my weights for these types of workouts - I always want to go as heavy as I can but that can slow things down and I feel then I can't keep up with them onscreen. Should we aim to go as heavy as poss or should we go lighter to keep up with them - is less weight more reps better??