Jessica Simpson nearly vomits after workout

Jessica Simpson worked out so hard she nearly vomited.

The curvy singer has embarked on an intense exercise regime to shed weight after a serious of unflattering photos of her were published on the internet. But the blonde beauty appears to be overdoing it, with a recent boxing session leaving her feeling physically sick.

The 29-year-old star posted on her Twitter account: “Just got done boxing and I can barely type! If anyone sees me puking start singing the Rocky theme song.”

It’s not the first time Jessica has overexerted herself while exercising. Last week she could barely walk after a session with her personal trainer Mike Alexander left her with “sore buns”.

"Why am I still hurting from our workout earlier?" Jessica wrote in a Twitter post to Mike. "I'm getting old! See you tomorrow with a pouty face and sore buns."

However, Mike ignored Jessica’s pleas and refused to go easy on the 29-year-old star in their next workout. "You are a bada*s,” he wrote on her Twitter page. "Your efforts know no limitations. And I can deal with looking at that pouty mug..."