Triceps pushups are a very challenging exercise for the back of the arms. Like traditional pushups, they challenge a variety of muscles in the body (not just the triceps)...what makes them different is your hand position on the floor. By using a narrow hand-placement, you can really target the triceps muscles.
However, according to (Kotler & Keller, 2006) the formal definition of marketing is an organizational function and a set of processes for creating, communication, and delivering value to customers and for managing customer relationships in ways that benefit the organization and its shareholders(Kotler & Keller, p.4).
niche marketing. Concentrating all marketing efforts on a small but specific and well defined segment of the population. Niches do not 'exist' but are 'created' by identifying needs, wants, and requirements that are being addressed poorly or not at all by other firms, and developing and delivering goods or services to satisfy them.