In start a work day by loggin in JIRA. At the end of the day I usually have 10+ tabs are open in the browser just for JIRA. Most of the times I only look description of the issue, I do not need issue to stay in the browser.
I have developed a free JIRA plugin to solve this problem. Everywhere inside (navigations, dashboard, inside other issues etc.) JIRA, if you hover mouse on an issue link, it displays description of the issue in a popover window. Preview contains all the formatting of JIRA, including images, tables, source code highlights etc. It is lighweight and fast way to browse issues.
You can download the plugin from Atlassian Marketplace.