Yes. It ramps up for me. When I first start my workout, albeit weights or cardio, I start the same - I don't immediately feel like I'm going to really slam it home. But as I get into the workout, I build up steam. Like I'll start on the bike and feel like 20 minutes is going to be tough. Then at 10 minutes, I'm still going strong. Then when I hit 20, I'm like, okay, how about 10 minutes on the treadmill, too. And best of all, I get good pumps (not anavar or tbol pumps, but good fullness), but I do NOT get calve pumps where I can't walk/run. I really like my sarms.