レースの前、例えば１週間ほどカフェイン抜き（コーヒー、緑茶、紅茶、ココア、チョコレートなどの摂取を一切控え、飲み物は牛乳か豆乳、お白湯に切り替える）をして、レース当日カフェインを含む補給食を摂取するとその効果の体感が非常によかった、という実体験があります。
Before a race, I cut every single drop of caffeine one week. I quitted coffee, green tea, tea, coco, chocolate and had mile, soy milk, or just hot water instead when I drink something. Then I had one of those supplements with caffeinated, it boosted me very much.
そんな私のようなコーヒー党（もしくは紅茶党）なあなたに朗報！
Here is good news for coffee (or tea) lover like me!
Its taste is normal café au lait, but I assume it includes much less or none caffeine, let's see...
ほんのちょっぴり入ってますね…
普通のコーヒーがだいたい100mg／杯のカフェインを含有していると言われています。
They said that about caffeine 100mg per cup of coffee is included.
And Espresso is said that it's been roasted for longer time than regular coffee so caffeine is volatilized more. Therefore it has less content by percentage than one of coffee. But it seems to have a wide range between 25~214mg, depends on inquiry.
