Legs and Shoulders

I dicided to go international, so today was my leg routine, i decided to experiment the triple drop set on the leg extension, i'm still working the weights but its about that, i felt it very hard on my vastus medialis.

Leg
Squats:
40 x 10
60 x 10
60 x 10
80 x 7
Leg extension (triple drop set):
35 x 8, 25 x 8, 15 x 8 (no rest between weight changes)
30 x 8, 25 x 8, 15 x 9 (no rest between weight changes)
30 x 8, 25 x 7, 15 x 7 (no rest between weight changes)
Calf raises on the calf machine:
40 x 15 (feet straight)
40 x 16 (feet straight)
40 x 15 (feet straight)

Shoulders
Machine Shoulder (Military) Press front:
15 x 15 warm up
20 x 10
25 x 8
25 x 6
Standing Dumbbell Lateral Raises:
7,5 x 9
7,5 x 8
7,5 x 10
Front Cable Raise:
10 x 10
10 x 9
10 x 9

at the end of the day my usual cardio.
18,23 km
0:48:53
751 cal
AHR: 137