It depends on where the marks are and what type of modeling you mean. Having stretch marks is not an automatic disqualification. Having stretch marks that will be visible when modeling might be.

econometric model

Deterministic time series analysis

Smoothing techniques

Barometer techniques

There are two main techniques to provide power to the model a non isolated dc to dc converter. One of the techniques are SMPS and the second technique is linear.

A personal trainer would definitely be able to help you stretch without causing harm to yourself. You can also learn techniques online at http://www.webmd.com/fitness-exercise/features/new-ideas-on-proper-stretching-techniques

Reduce force, terrain model and radio ...IG @05staR