Every client is different with a unique goal, movement ability, and training history. Thus, a smart trainer crafts each program to meet their client’s specific needs. For example, a client with significant knee pain will get lower-body exercises that minimize knee bend and target the posterior chain.
Poor trainers, however, give inappropriate exercises. For example, they’ll give an obese client dozens of box jumps and burpees, which will crush their joints, or they’ll give all their clients the same workout, which will limit some and hurt others.
In the short-term, their client might lose some weight; in the long-term, however, they’re risking lousy results and a serious injury. Unfortunately, it’s tough for novices to know what exercises are appropriate—in this situation, get a second opinion from a respected fitness coach.