Good article. My routine is going as heavy as possible standing with dumbbells using both arms simultaneously. After 2 sets of 10, I go for super strict standing single arm dumbbell curls with 5lbs lighter, 3 sets of 7-10 depending on my strength/drive for that day. I NEVER swing a dumbbell, always standing straight, at times even bracing myself with the other arm against a wall or beam to focus on strict movement. Just talking about it makes me wanna make Friday another bicep day haha