Day 15 consists of 4x 60s planks and 100 Russian twists. To my surprise, I made it!! I managed to complete the 4x 60s planks and 100 Russian twists as per the program designed. No unnecessary breaks in between. I'm so proud of myself :)
The plank is still as as hard as it normally is, but this round I have enough strength to hold myself for full 60s each time. Really can't hide my excitement :)
