Professional boxer · Boxing coach
Meet Naphtali Nembhard
Naphtali Nembhard, known as Nap, is a professional boxer who coaches boxing in Sheffield, South Yorkshire. He works with everyone from complete beginners to experienced boxers.
In your corner
Boxing, taught properly
A professional boxer who coaches every level.
As a professional boxer, Nap knows what good technique looks like and what it takes to build it. He brings that to every session he coaches, whether you’re walking into your first one or you’ve been boxing for years.
Sessions are built around the person in front of him. If you’re new, that means learning the basics properly and at a pace that suits you, with no pressure and no showing off. If you already box, it means sharper technique, better habits and a coach who can tell you exactly what to work on next.
Plenty of people come to boxing a little nervous. That’s normal, and you’re welcome. Tell Nap about your experience, your goals and any injuries when you book, and he’ll take it from there.
The name
Why “Sweet Science”?
“The sweet science” is a long-standing nickname for boxing. It’s a nod to the skill, timing and thinking behind every punch, slip and step, and to the fact that good boxing is learned rather than forced. That idea sits at the heart of South Yorkshire Sweet Science: real technique, coached with care, for anyone in Sheffield who wants to learn.
Have a question before you book? Email Nap at nap@southyorkshiresweetscience.co.uk or see the contact page.
Train with Nap
Three ways to train
Personal 1-2-1 coaching, a female-only Saturday class and private sessions for groups. Beginners are welcome in all of them.
Personal coaching
1-2-1 boxing
£30 per session
Coaching built around your goals, your experience and your pace, with Nap’s full attention for the whole session.
- Just you and Nap
- Complete beginners to experienced boxers
- Bundles from £25 a session
Saturday class
Women’s boxing
£6 per person
A supportive, female-only class focused on fitness, technique and confidence.
- Women only
- Saturdays
- Beginners welcome
Train together
Private group
£35 per session
Bring your friends, family or colleagues for a private boxing session, just for your group.
- Two or more people
- Friends, family or colleagues
- A session for your group only
Ready to train with Nap?
Pick a live time from Nap’s diary and request your session. New customers pay after Nap confirms.