This Site Might Help You. RE: Why do breathing and heart rate remain elevated after exercise stops? One measrue of physical fitness is a &quot;step test,&quot; in which a subject steps us on a low platform and then back down (one second for each), and continues this process for 3 minutes.aybe because your muscles are still requiring oxygen since they are still swollen from being used. Oxygen is transported to your muscles via your blood from your lungs and that could be the reason why your heart rate stays elevated.
Old headlights gave off 700 lumens of light; new headlights give off 1,000 to 1,200 lumens; high-intensity discharge lights (the term Xenon is really a misnomer, Bibbo said) give off 3,000 lumens.ld headlights gave off 700 lumens of light; new headlights give off 1,000 to 1,200 lumens; high-intensity discharge lights (the term Xenon is really a misnomer, Bibbo said) give off 3,000 lumens.
Alternatively the light beam can be directed by a projector lens within the headlight housing, such as the ones found in the Mazda MX-5 (above, right). Combing low cost and a working life of between 500 and 1000 hours, halogen bulbs are the most common headlamp type in use today, although that is rapidly changing.or headlights with an output over 2000 lumens (thatâs all HID units, basically) a headlamp washer and self levelling system is required, and cars sold with halogen lights usually arenât equipped with either feature.