Success is a Marathon

When you feel good, it shows. How adopting healthy habits can help you reach professional peaks:

• Vary that pace. Think it's most productive to go from task to task in a steady pace? "We call this being linear," Jack Groppel, co-founder of the Human Performance Institute, a fitness consultancy, told IBD.

The problem is people don't operate like monotonous robots. "The human brain will just check out," he said.