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.
LED Flashlights â Most flashlights today are LED Flashlights, meaning they use LED bulbs in place of the old incandescent bulbs. LED bulbs are cheaper and more reliable! Most LED flashlights use one of the following Cree LED bulbs: 1  XM-L (T6)/(U2), the bulb used in most LED flashlights, with a maximum output around 700 lumens. 2  XR-E (R2), with around 300 lumen count. 3  XP-E (R2), with around 300 lumen count, but larger than the XR-E.