[Chunga]

I'm assuming you're a man. If so, you're taking it way too easy on the elliptical machine.

I'm 51 and today I burned 652 calories in 40 minutes, cooldown included. I am no specimen.

You need to start pushing yourself toward 500 calories in a 30 minute period.

Eat a Subway tuna sandwich with veggies and spicy mustard instead of mayo as a meal whenever you can. Drink water constantly. If you own your house, spend lots of time in the yard. Take the stairs. Walk everywhere you can. Move constantly.

[Bear_Slayer]

You need to start pushing yourself toward 500 calories in a 30 minute period.

By what method, increase resistance, increase the incline, or sprint continuously?