Because the flavor and vibrance of fresh juice after it sits at room temperature for say 15 minutes....does change.

Also I have heard that Orange, lemon , grapefruit juices kills the live active enzimes in the juice. So avoiding these good beverages an hour before and an hour after should be considered.

I do know a few that make their fresh wheatgrass and put it on ice cubes in a container and sip it all day long.

Wheatgrass juice is 100% non toxic....SO thing it is the BEST FOOD you can put into your body.....DRINKING TOO much is like eating too many fresh cherries..watermelon etc.>>>Your body will lrt you know when you have injested your limit.

YES the old fashioned METAL juicers require cleaning and a veggie oil applied to inhibit the rust of the metal.

That is why the newer machines have polycarbinate juiceing heads >>no lube nessary and many times may be used 2 or 3 times(as long as you store the removable juiceing head in the fridg. Before cleaning again.

Eat FRESH and STATY GREEN and be Healthy!

When it comes to wheatgrass....FRESH RULES!

Frozen, freeze dried or powdered....is for the people who listen to their doctors....and take Man made DRUGS with side effects.