Week two of ‘05 and you’re right on track. Healthy. Sensible. Well rested. (Liar.) Good thing weekends don’t count.

HEAR
Dirty on Purpose
What: Brooklyn party-of-five’s sweet vocals and rich instrumentals.
Why: Time to quit gazing at your shoes, wallflower.
When: Sat. at 11 p.m.
Where: Sin-e, 150 Attorney St., b/t Houston and Stanton Sts. (212-388-0077).

DO
Vietnamese Cooking Class
What: Lesson in the kitchen and lunch in Viet Nam gallery next door.
Why: You’ll go Goi Ga over the menu.
When: Sun. at 12:30 p.m.
Where: VietCafe, 345 Greenwich St., at Harrison St. (212-431-5888).

EAT
Cocaine Roll
What: Charming sushi chef (a.k.a. Floyd) dishes comedy, euphoria, and a yellowtail-salmon-tuna-avocado combo.
Why: Highly addictive nosh you’ll want to snort. But we recommend chopsticks.
When: Fri. & Sat. 5 p.m.-midnight, Sun. 4 p.m.-11 p.m.
Where: Sakura Hana, 615 Hudson St., b/t 12th and Jane Sts. (212-645-2128).

BUY
Hollywould Insane Sale
What: Awe-inspiring shoes. Discounts get better by the day — up to 80 percent.
Why: Shoes and sales. Now that’s a winning pair.
When: Thurs.-Sat. 11:30 a.m.-7 p.m.
Where: 198 Elizabeth St., b/t Prince and Spring Sts. (212-343-8344 x2).

Henri Bendel Lingerie Sale
What: Up to 60 percent off sexy underpinnings from Roberto Cavalli, Fleur T., Leah Bantivoglio, and Miss Ruby.
Why: You have to put it on before you take it off.
When: Sat. 10 a.m.-8 p.m., Sun. noon-7 p.m.
Where: 712 Fifth Ave., b/t 55th and 56th Sts. (212-247-1100).